SUSE-SU-2026:4139-1: critical: Security update for dovecot23
SLE-SECURITY-UPDATES
null at suse.de
Mon Sep 14 12:45:42 UTC 2026
# Security update for dovecot23
Announcement ID: SUSE-SU-2026:4139-1
Release Date: 2026-09-14T07:22:34Z
Rating: critical
References:
* bsc#1229183
* bsc#1229184
* bsc#1260894
* bsc#1260895
* bsc#1260897
* bsc#1260898
* bsc#1260899
* bsc#1260900
* bsc#1260901
* bsc#1260902
* bsc#1265147
* bsc#1265148
* bsc#1265149
* bsc#1265150
* bsc#1276794
* bsc#1276795
* bsc#1276799
* bsc#1276800
* bsc#1276802
* bsc#1276804
* bsc#1276809
* bsc#1276811
* bsc#1276812
* bsc#1276815
* bsc#1276817
* bsc#1276820
* bsc#1276824
* bsc#1276826
* bsc#1276827
* bsc#1276828
* bsc#1276830
* bsc#1276833
* bsc#1276835
* bsc#1276837
Cross-References:
* CVE-2024-23184
* CVE-2024-23185
* CVE-2025-59028
* CVE-2025-59031
* CVE-2025-59032
* CVE-2026-27852
* CVE-2026-27855
* CVE-2026-27856
* CVE-2026-27857
* CVE-2026-27858
* CVE-2026-27859
* CVE-2026-33263
* CVE-2026-33603
* CVE-2026-33604
* CVE-2026-33605
* CVE-2026-33606
* CVE-2026-33607
* CVE-2026-40014
* CVE-2026-40015
* CVE-2026-40016
* CVE-2026-40019
* CVE-2026-40020
* CVE-2026-40203
* CVE-2026-40205
* CVE-2026-42006
* CVE-2026-42007
* CVE-2026-42008
* CVE-2026-42391
* CVE-2026-42393
* CVE-2026-42395
* CVE-2026-52681
* CVE-2026-52687
* CVE-2026-73208
* CVE-2026-73209
CVSS scores:
* CVE-2024-23184 ( SUSE ): 6.9
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:L
* CVE-2024-23184 ( SUSE ): 5.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L
* CVE-2024-23184 ( NVD ): 5.0 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:N
* CVE-2024-23185 ( SUSE ): 8.2
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
* CVE-2024-23185 ( SUSE ): 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
* CVE-2024-23185 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
* CVE-2025-59028 ( SUSE ): 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
* CVE-2025-59028 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
* CVE-2025-59028 ( NVD ): 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
* CVE-2025-59031 ( SUSE ): 6.9
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
* CVE-2025-59031 ( SUSE ): 4.3 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
* CVE-2025-59031 ( NVD ): 4.3 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
* CVE-2025-59032 ( SUSE ): 8.7
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
* CVE-2025-59032 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
* CVE-2025-59032 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
* CVE-2025-59032 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
* CVE-2026-27852 ( SUSE ): 8.7
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
* CVE-2026-27852 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
* CVE-2026-27852 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
* CVE-2026-27855 ( SUSE ): 7.6
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
* CVE-2026-27855 ( SUSE ): 6.8 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
* CVE-2026-27855 ( NVD ): 6.8 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
* CVE-2026-27855 ( NVD ): 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
* CVE-2026-27856 ( SUSE ): 9.1
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
* CVE-2026-27856 ( SUSE ): 7.4 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
* CVE-2026-27856 ( NVD ): 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
* CVE-2026-27856 ( NVD ): 7.4 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
* CVE-2026-27856 ( NVD ): 7.4 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
* CVE-2026-27857 ( SUSE ): 6.9
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
* CVE-2026-27857 ( SUSE ): 4.3 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
* CVE-2026-27857 ( NVD ): 4.3 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
* CVE-2026-27857 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
* CVE-2026-27857 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
* CVE-2026-27858 ( SUSE ): 8.7
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
* CVE-2026-27858 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
* CVE-2026-27858 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
* CVE-2026-27858 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
* CVE-2026-27859 ( SUSE ): 6.9
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
* CVE-2026-27859 ( SUSE ): 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
* CVE-2026-27859 ( NVD ): 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
* CVE-2026-33263 ( SUSE ): 4.8
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
* CVE-2026-33263 ( SUSE ): 4.3 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
* CVE-2026-33263 ( NVD ): 4.3 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
* CVE-2026-33603 ( SUSE ): 7.6
CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
* CVE-2026-33603 ( SUSE ): 6.8 CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
* CVE-2026-33603 ( NVD ): 6.8 CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
* CVE-2026-33603 ( NVD ): 5.3 CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
* CVE-2026-33604 ( SUSE ): 8.2
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
* CVE-2026-33604 ( SUSE ): 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
* CVE-2026-33604 ( NVD ): 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
* CVE-2026-33605 ( SUSE ): 8.7
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
* CVE-2026-33605 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
* CVE-2026-33605 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
* CVE-2026-33606 ( SUSE ): 5.7
CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
* CVE-2026-33606 ( SUSE ): 4.8 CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:H/A:N
* CVE-2026-33606 ( NVD ): 4.8 CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:H/A:N
* CVE-2026-33607 ( SUSE ): 5.3
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
* CVE-2026-33607 ( SUSE ): 4.3 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
* CVE-2026-33607 ( NVD ): 4.3 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
* CVE-2026-40014 ( SUSE ): 6.9
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
* CVE-2026-40014 ( SUSE ): 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
* CVE-2026-40014 ( NVD ): 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
* CVE-2026-40015 ( SUSE ): 5.3
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
* CVE-2026-40015 ( SUSE ): 4.3 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
* CVE-2026-40015 ( NVD ): 4.3 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
* CVE-2026-40016 ( SUSE ): 7.1
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
* CVE-2026-40016 ( SUSE ): 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
* CVE-2026-40016 ( NVD ): 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
* CVE-2026-40016 ( NVD ): 5.3 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
* CVE-2026-40019 ( SUSE ): 8.2
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
* CVE-2026-40019 ( SUSE ): 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
* CVE-2026-40019 ( NVD ): 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
* CVE-2026-40020 ( SUSE ): 5.3
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
* CVE-2026-40020 ( SUSE ): 4.3 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
* CVE-2026-40020 ( NVD ): 3.1 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L
* CVE-2026-40020 ( NVD ): 4.3 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
* CVE-2026-40203 ( SUSE ): 6.3
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
* CVE-2026-40203 ( SUSE ): 3.7 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
* CVE-2026-40203 ( NVD ): 3.7 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
* CVE-2026-40205 ( SUSE ): 6.0
CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N
* CVE-2026-40205 ( SUSE ): 5.9 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:H/A:N
* CVE-2026-40205 ( NVD ): 5.9 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:H/A:N
* CVE-2026-42006 ( SUSE ): 8.7
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
* CVE-2026-42006 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
* CVE-2026-42006 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
* CVE-2026-42006 ( NVD ): 4.3 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
* CVE-2026-42007 ( SUSE ): 8.5
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:H/SC:L/SI:L/SA:H
* CVE-2026-42007 ( SUSE ): 9.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:H
* CVE-2026-42007 ( NVD ): 9.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:H
* CVE-2026-42008 ( SUSE ): 5.3
CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
* CVE-2026-42008 ( SUSE ): 4.3 CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
* CVE-2026-42008 ( NVD ): 4.3 CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
* CVE-2026-42391 ( SUSE ): 8.7
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
* CVE-2026-42391 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
* CVE-2026-42391 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
* CVE-2026-42393 ( SUSE ): 2.3
CVSS:4.0/AV:A/AC:H/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
* CVE-2026-42393 ( SUSE ): 3.1 CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
* CVE-2026-42393 ( NVD ): 3.1 CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
* CVE-2026-42395 ( SUSE ): 4.3 CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
* CVE-2026-42395 ( NVD ): 4.3 CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
* CVE-2026-52681 ( SUSE ): 6.3
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
* CVE-2026-52681 ( SUSE ): 3.1 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L
* CVE-2026-52681 ( NVD ): 3.1 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L
* CVE-2026-52687 ( SUSE ): 7.1
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
* CVE-2026-52687 ( SUSE ): 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
* CVE-2026-52687 ( NVD ): 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
* CVE-2026-73208 ( SUSE ): 9.1
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
* CVE-2026-73208 ( SUSE ): 7.4 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
* CVE-2026-73208 ( NVD ): 7.4 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
* CVE-2026-73209 ( SUSE ): 7.1
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:L/SI:N/SA:N
* CVE-2026-73209 ( SUSE ): 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
* CVE-2026-73209 ( NVD ): 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Affected Products:
* Server Applications Module 15-SP7
* SUSE Linux Enterprise High Performance Computing 15 SP4
* SUSE Linux Enterprise High Performance Computing 15 SP5
* SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4
* SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5
* SUSE Linux Enterprise High Performance Computing LTSS 15 SP4
* SUSE Linux Enterprise High Performance Computing LTSS 15 SP5
* SUSE Linux Enterprise Real Time 15 SP7
* SUSE Linux Enterprise Server 15 SP4
* SUSE Linux Enterprise Server 15 SP4 LTSS
* SUSE Linux Enterprise Server 15 SP5
* SUSE Linux Enterprise Server 15 SP5 LTSS
* SUSE Linux Enterprise Server 15 SP6
* SUSE Linux Enterprise Server 15 SP6 LTSS
* SUSE Linux Enterprise Server 15 SP7
* SUSE Linux Enterprise Server for SAP Applications 15 SP4
* SUSE Linux Enterprise Server for SAP Applications 15 SP5
* SUSE Linux Enterprise Server for SAP Applications 15 SP6
* SUSE Linux Enterprise Server for SAP Applications 15 SP7
An update that solves 34 vulnerabilities can now be installed.
## Description:
This update for dovecot23 fixes the following issues:
* CVE-2024-23184: parsing of messages containing many address headers (From,
To, Cc, Bcc, etc.) could be excessively CPU intensive (bsc#1229184).
* CVE-2024-23185: large headers can cause resource exhaustion when parsing
message (bsc#1229183).
* CVE-2025-59028: Invalid base64 authentication can cause DoS for other logins
(bsc#1260894).
* CVE-2025-59031: decode2text.sh OOXML extraction may follow symlinks and read
unintended files during indexing (bsc#1260895).
* CVE-2025-59032: pigeonhole: ManageSieve panic occurs with sieve-connect as a
client (bsc#1260902).
* CVE-2026-27852: DoS by sending mail with bad header (bsc#1276799).
* CVE-2026-27855: OTP driver vulnerable to replay attack (bsc#1260900).
* CVE-2026-27856: Doveadm credentials were not checked using timing-safe
checking function (bsc#1260899).
* CVE-2026-27857: sending excessive parenthesis causes imap-login to use
excessive memory (bsc#1260898).
* CVE-2026-27858: pigeonhole: managesieve-login can allocate large amount of
memory during authentication (bsc#1260901).
* CVE-2026-27859: excessive RFC 2231 MIME parameters in email would can
excessive CPU usage (bsc#1260897).
* CVE-2026-33263: submission-login: Panic when mail_max_userip_connections is
reached (bsc#1276794).
* CVE-2026-33603: login: base64 input can contain tabs that bypass IPC
protection (bsc#1265147).
* CVE-2026-33604: SMTP Smuggling via Missing Dot-Stuffing (bsc#1276802).
* CVE-2026-33605: managesieve-login: Pre-auth crash (bsc#1276809).
* CVE-2026-33606: dsync: Mail content can cause dsync protocol injection
(bsc#1276800).
* CVE-2026-33607: IMAP LIST match_sub() Exponential Backtracking -- CPU Denial
of Service (bsc#1276795).
* CVE-2026-40014: CPU DoS via Crafted References Header (bsc#1276804).
* CVE-2026-40015: imap-hibernate can be crashed (bsc#1276812).
* CVE-2026-40016: Sieve :contains/:matches O(NxM) substring match bypasses
sieve_max_cpu_time limit (bsc#1265148).
* CVE-2026-40019: managesieve-login pre-auth infinite loop (bsc#1276811).
* CVE-2026-40020: IMAP folders can be shared-spammed to everyone
(bsc#1265149).
* CVE-2026-40203: IMAP Compression Can Reveal Whether a Small Synced Email
Body Matches Sender-Chosen Text (bsc#1276815).
* CVE-2026-40205: OAuth2 passdb scope enforcement bypass via OR semantics in
remote validation path (bsc#1276820).
* CVE-2026-42006: imap-login: uncontrolled memory usage with excessive bracing
over IMAP (bsc#1265150).
* CVE-2026-42007: editheader RCE (bsc#1276817).
* CVE-2026-42008: XCLIENT FORWARD= bare token not namespaced (bsc#1276824).
* CVE-2026-42391: imap: Pre-login memory/CPU growth with ID command
(bsc#1276835).
* CVE-2026-42393: doveadm_password or api key length can still be leaked with
timing comparisons (bsc#1276827).
* CVE-2026-42395: Single NUL-Byte XCLIENT FORWARD Payload Crashes
(bsc#1276826).
* CVE-2026-52681: Sieve resource usage tracking lost when active script
changes (bsc#1276828).
* CVE-2026-52687: IMAP: COMPRESS ZSTD can cause excessive memory usage
(bsc#1276837).
* CVE-2026-73208: auth: db-oauth2: aud claim used as fallback for missing
scope claim (bsc#1276830).
* CVE-2026-73209: imap-login crash: Self-recursion on zero-output decompress
chunks (bsc#1276833).
Changes for dovecot23:
* Update to version 2.3.21.1.
## Patch Instructions:
To install this SUSE update use the SUSE recommended installation methods like
YaST online_update or "zypper patch".
Alternatively you can run the command listed for your product:
* SUSE Linux Enterprise Server for SAP Applications 15 SP4
zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP4-2026-4139
* SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4
zypper in -t patch SUSE-SLE-Product-HPC-15-SP4-ESPOS-2026-4139
* SUSE Linux Enterprise High Performance Computing LTSS 15 SP4
zypper in -t patch SUSE-SLE-Product-HPC-15-SP4-LTSS-2026-4139
* SUSE Linux Enterprise Server for SAP Applications 15 SP5
zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP5-2026-4139
* SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5
zypper in -t patch SUSE-SLE-Product-HPC-15-SP5-ESPOS-2026-4139
* SUSE Linux Enterprise High Performance Computing LTSS 15 SP5
zypper in -t patch SUSE-SLE-Product-HPC-15-SP5-LTSS-2026-4139
* SUSE Linux Enterprise Server for SAP Applications 15 SP6
zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP6-2026-4139
* SUSE Linux Enterprise Server 15 SP4 LTSS
zypper in -t patch SUSE-SLE-Product-SLES-15-SP4-LTSS-2026-4139
* Server Applications Module 15-SP7
zypper in -t patch SUSE-SLE-Module-Server-Applications-15-SP7-2026-4139
* SUSE Linux Enterprise Server 15 SP5 LTSS
zypper in -t patch SUSE-SLE-Product-SLES-15-SP5-LTSS-2026-4139
* SUSE Linux Enterprise Server 15 SP6 LTSS
zypper in -t patch SUSE-SLE-Product-SLES-15-SP6-LTSS-2026-4139
## Package List:
* SUSE Linux Enterprise Server for SAP Applications 15 SP4 (ppc64le x86_64)
* dovecot23-fts-2.3.21.1-150200.76.1
* dovecot23-fts-lucene-2.3.21.1-150200.76.1
* dovecot23-fts-solr-debuginfo-2.3.21.1-150200.76.1
* dovecot23-debugsource-2.3.21.1-150200.76.1
* dovecot23-fts-squat-2.3.21.1-150200.76.1
* dovecot23-backend-pgsql-2.3.21.1-150200.76.1
* dovecot23-backend-mysql-debuginfo-2.3.21.1-150200.76.1
* dovecot23-backend-sqlite-2.3.21.1-150200.76.1
* dovecot23-debuginfo-2.3.21.1-150200.76.1
* dovecot23-devel-2.3.21.1-150200.76.1
* dovecot23-fts-lucene-debuginfo-2.3.21.1-150200.76.1
* dovecot23-fts-solr-2.3.21.1-150200.76.1
* dovecot23-backend-sqlite-debuginfo-2.3.21.1-150200.76.1
* dovecot23-fts-squat-debuginfo-2.3.21.1-150200.76.1
* dovecot23-backend-pgsql-debuginfo-2.3.21.1-150200.76.1
* dovecot23-backend-mysql-2.3.21.1-150200.76.1
* dovecot23-fts-debuginfo-2.3.21.1-150200.76.1
* dovecot23-2.3.21.1-150200.76.1
* SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4 (aarch64
x86_64)
* dovecot23-fts-2.3.21.1-150200.76.1
* dovecot23-fts-lucene-2.3.21.1-150200.76.1
* dovecot23-fts-solr-debuginfo-2.3.21.1-150200.76.1
* dovecot23-debugsource-2.3.21.1-150200.76.1
* dovecot23-fts-squat-2.3.21.1-150200.76.1
* dovecot23-backend-pgsql-2.3.21.1-150200.76.1
* dovecot23-backend-mysql-debuginfo-2.3.21.1-150200.76.1
* dovecot23-backend-sqlite-2.3.21.1-150200.76.1
* dovecot23-debuginfo-2.3.21.1-150200.76.1
* dovecot23-devel-2.3.21.1-150200.76.1
* dovecot23-fts-lucene-debuginfo-2.3.21.1-150200.76.1
* dovecot23-fts-solr-2.3.21.1-150200.76.1
* dovecot23-backend-sqlite-debuginfo-2.3.21.1-150200.76.1
* dovecot23-fts-squat-debuginfo-2.3.21.1-150200.76.1
* dovecot23-backend-pgsql-debuginfo-2.3.21.1-150200.76.1
* dovecot23-backend-mysql-2.3.21.1-150200.76.1
* dovecot23-fts-debuginfo-2.3.21.1-150200.76.1
* dovecot23-2.3.21.1-150200.76.1
* SUSE Linux Enterprise High Performance Computing LTSS 15 SP4 (aarch64
x86_64)
* dovecot23-fts-2.3.21.1-150200.76.1
* dovecot23-fts-lucene-2.3.21.1-150200.76.1
* dovecot23-fts-solr-debuginfo-2.3.21.1-150200.76.1
* dovecot23-debugsource-2.3.21.1-150200.76.1
* dovecot23-fts-squat-2.3.21.1-150200.76.1
* dovecot23-backend-pgsql-2.3.21.1-150200.76.1
* dovecot23-backend-mysql-debuginfo-2.3.21.1-150200.76.1
* dovecot23-backend-sqlite-2.3.21.1-150200.76.1
* dovecot23-debuginfo-2.3.21.1-150200.76.1
* dovecot23-devel-2.3.21.1-150200.76.1
* dovecot23-fts-lucene-debuginfo-2.3.21.1-150200.76.1
* dovecot23-fts-solr-2.3.21.1-150200.76.1
* dovecot23-backend-sqlite-debuginfo-2.3.21.1-150200.76.1
* dovecot23-fts-squat-debuginfo-2.3.21.1-150200.76.1
* dovecot23-backend-pgsql-debuginfo-2.3.21.1-150200.76.1
* dovecot23-backend-mysql-2.3.21.1-150200.76.1
* dovecot23-fts-debuginfo-2.3.21.1-150200.76.1
* dovecot23-2.3.21.1-150200.76.1
* SUSE Linux Enterprise Server for SAP Applications 15 SP5 (ppc64le x86_64)
* dovecot23-fts-2.3.21.1-150200.76.1
* dovecot23-fts-lucene-2.3.21.1-150200.76.1
* dovecot23-fts-solr-debuginfo-2.3.21.1-150200.76.1
* dovecot23-debugsource-2.3.21.1-150200.76.1
* dovecot23-fts-squat-2.3.21.1-150200.76.1
* dovecot23-backend-pgsql-2.3.21.1-150200.76.1
* dovecot23-backend-mysql-debuginfo-2.3.21.1-150200.76.1
* dovecot23-backend-sqlite-2.3.21.1-150200.76.1
* dovecot23-debuginfo-2.3.21.1-150200.76.1
* dovecot23-devel-2.3.21.1-150200.76.1
* dovecot23-fts-lucene-debuginfo-2.3.21.1-150200.76.1
* dovecot23-fts-solr-2.3.21.1-150200.76.1
* dovecot23-backend-sqlite-debuginfo-2.3.21.1-150200.76.1
* dovecot23-fts-squat-debuginfo-2.3.21.1-150200.76.1
* dovecot23-backend-pgsql-debuginfo-2.3.21.1-150200.76.1
* dovecot23-backend-mysql-2.3.21.1-150200.76.1
* dovecot23-fts-debuginfo-2.3.21.1-150200.76.1
* dovecot23-2.3.21.1-150200.76.1
* SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5 (aarch64
x86_64)
* dovecot23-fts-2.3.21.1-150200.76.1
* dovecot23-fts-lucene-2.3.21.1-150200.76.1
* dovecot23-fts-solr-debuginfo-2.3.21.1-150200.76.1
* dovecot23-debugsource-2.3.21.1-150200.76.1
* dovecot23-fts-squat-2.3.21.1-150200.76.1
* dovecot23-backend-pgsql-2.3.21.1-150200.76.1
* dovecot23-backend-mysql-debuginfo-2.3.21.1-150200.76.1
* dovecot23-backend-sqlite-2.3.21.1-150200.76.1
* dovecot23-debuginfo-2.3.21.1-150200.76.1
* dovecot23-devel-2.3.21.1-150200.76.1
* dovecot23-fts-lucene-debuginfo-2.3.21.1-150200.76.1
* dovecot23-fts-solr-2.3.21.1-150200.76.1
* dovecot23-backend-sqlite-debuginfo-2.3.21.1-150200.76.1
* dovecot23-fts-squat-debuginfo-2.3.21.1-150200.76.1
* dovecot23-backend-pgsql-debuginfo-2.3.21.1-150200.76.1
* dovecot23-backend-mysql-2.3.21.1-150200.76.1
* dovecot23-fts-debuginfo-2.3.21.1-150200.76.1
* dovecot23-2.3.21.1-150200.76.1
* SUSE Linux Enterprise High Performance Computing LTSS 15 SP5 (aarch64
x86_64)
* dovecot23-fts-2.3.21.1-150200.76.1
* dovecot23-fts-lucene-2.3.21.1-150200.76.1
* dovecot23-fts-solr-debuginfo-2.3.21.1-150200.76.1
* dovecot23-debugsource-2.3.21.1-150200.76.1
* dovecot23-fts-squat-2.3.21.1-150200.76.1
* dovecot23-backend-pgsql-2.3.21.1-150200.76.1
* dovecot23-backend-mysql-debuginfo-2.3.21.1-150200.76.1
* dovecot23-backend-sqlite-2.3.21.1-150200.76.1
* dovecot23-debuginfo-2.3.21.1-150200.76.1
* dovecot23-devel-2.3.21.1-150200.76.1
* dovecot23-fts-lucene-debuginfo-2.3.21.1-150200.76.1
* dovecot23-fts-solr-2.3.21.1-150200.76.1
* dovecot23-backend-sqlite-debuginfo-2.3.21.1-150200.76.1
* dovecot23-fts-squat-debuginfo-2.3.21.1-150200.76.1
* dovecot23-backend-pgsql-debuginfo-2.3.21.1-150200.76.1
* dovecot23-backend-mysql-2.3.21.1-150200.76.1
* dovecot23-fts-debuginfo-2.3.21.1-150200.76.1
* dovecot23-2.3.21.1-150200.76.1
* SUSE Linux Enterprise Server for SAP Applications 15 SP6 (ppc64le x86_64)
* dovecot23-fts-2.3.21.1-150200.76.1
* dovecot23-fts-lucene-2.3.21.1-150200.76.1
* dovecot23-fts-solr-debuginfo-2.3.21.1-150200.76.1
* dovecot23-debugsource-2.3.21.1-150200.76.1
* dovecot23-fts-squat-2.3.21.1-150200.76.1
* dovecot23-backend-pgsql-2.3.21.1-150200.76.1
* dovecot23-backend-mysql-debuginfo-2.3.21.1-150200.76.1
* dovecot23-backend-sqlite-2.3.21.1-150200.76.1
* dovecot23-debuginfo-2.3.21.1-150200.76.1
* dovecot23-devel-2.3.21.1-150200.76.1
* dovecot23-fts-lucene-debuginfo-2.3.21.1-150200.76.1
* dovecot23-fts-solr-2.3.21.1-150200.76.1
* dovecot23-backend-sqlite-debuginfo-2.3.21.1-150200.76.1
* dovecot23-fts-squat-debuginfo-2.3.21.1-150200.76.1
* dovecot23-backend-pgsql-debuginfo-2.3.21.1-150200.76.1
* dovecot23-backend-mysql-2.3.21.1-150200.76.1
* dovecot23-fts-debuginfo-2.3.21.1-150200.76.1
* dovecot23-2.3.21.1-150200.76.1
* SUSE Linux Enterprise Server 15 SP4 LTSS (aarch64 ppc64le s390x x86_64)
* dovecot23-fts-2.3.21.1-150200.76.1
* dovecot23-fts-lucene-2.3.21.1-150200.76.1
* dovecot23-fts-solr-debuginfo-2.3.21.1-150200.76.1
* dovecot23-debugsource-2.3.21.1-150200.76.1
* dovecot23-fts-squat-2.3.21.1-150200.76.1
* dovecot23-backend-pgsql-2.3.21.1-150200.76.1
* dovecot23-backend-mysql-debuginfo-2.3.21.1-150200.76.1
* dovecot23-backend-sqlite-2.3.21.1-150200.76.1
* dovecot23-debuginfo-2.3.21.1-150200.76.1
* dovecot23-devel-2.3.21.1-150200.76.1
* dovecot23-fts-lucene-debuginfo-2.3.21.1-150200.76.1
* dovecot23-fts-solr-2.3.21.1-150200.76.1
* dovecot23-backend-sqlite-debuginfo-2.3.21.1-150200.76.1
* dovecot23-fts-squat-debuginfo-2.3.21.1-150200.76.1
* dovecot23-backend-pgsql-debuginfo-2.3.21.1-150200.76.1
* dovecot23-backend-mysql-2.3.21.1-150200.76.1
* dovecot23-fts-debuginfo-2.3.21.1-150200.76.1
* dovecot23-2.3.21.1-150200.76.1
* Server Applications Module 15-SP7 (aarch64 ppc64le s390x x86_64)
* dovecot23-fts-2.3.21.1-150200.76.1
* dovecot23-fts-lucene-2.3.21.1-150200.76.1
* dovecot23-fts-solr-debuginfo-2.3.21.1-150200.76.1
* dovecot23-debugsource-2.3.21.1-150200.76.1
* dovecot23-fts-squat-2.3.21.1-150200.76.1
* dovecot23-backend-pgsql-2.3.21.1-150200.76.1
* dovecot23-backend-mysql-debuginfo-2.3.21.1-150200.76.1
* dovecot23-backend-sqlite-2.3.21.1-150200.76.1
* dovecot23-debuginfo-2.3.21.1-150200.76.1
* dovecot23-devel-2.3.21.1-150200.76.1
* dovecot23-fts-lucene-debuginfo-2.3.21.1-150200.76.1
* dovecot23-fts-solr-2.3.21.1-150200.76.1
* dovecot23-backend-sqlite-debuginfo-2.3.21.1-150200.76.1
* dovecot23-fts-squat-debuginfo-2.3.21.1-150200.76.1
* dovecot23-backend-pgsql-debuginfo-2.3.21.1-150200.76.1
* dovecot23-backend-mysql-2.3.21.1-150200.76.1
* dovecot23-fts-debuginfo-2.3.21.1-150200.76.1
* dovecot23-2.3.21.1-150200.76.1
* SUSE Linux Enterprise Server 15 SP5 LTSS (aarch64 ppc64le s390x x86_64)
* dovecot23-fts-2.3.21.1-150200.76.1
* dovecot23-fts-lucene-2.3.21.1-150200.76.1
* dovecot23-fts-solr-debuginfo-2.3.21.1-150200.76.1
* dovecot23-debugsource-2.3.21.1-150200.76.1
* dovecot23-fts-squat-2.3.21.1-150200.76.1
* dovecot23-backend-pgsql-2.3.21.1-150200.76.1
* dovecot23-backend-mysql-debuginfo-2.3.21.1-150200.76.1
* dovecot23-backend-sqlite-2.3.21.1-150200.76.1
* dovecot23-debuginfo-2.3.21.1-150200.76.1
* dovecot23-devel-2.3.21.1-150200.76.1
* dovecot23-fts-lucene-debuginfo-2.3.21.1-150200.76.1
* dovecot23-fts-solr-2.3.21.1-150200.76.1
* dovecot23-backend-sqlite-debuginfo-2.3.21.1-150200.76.1
* dovecot23-fts-squat-debuginfo-2.3.21.1-150200.76.1
* dovecot23-backend-pgsql-debuginfo-2.3.21.1-150200.76.1
* dovecot23-backend-mysql-2.3.21.1-150200.76.1
* dovecot23-fts-debuginfo-2.3.21.1-150200.76.1
* dovecot23-2.3.21.1-150200.76.1
* SUSE Linux Enterprise Server 15 SP6 LTSS (aarch64 ppc64le s390x x86_64)
* dovecot23-fts-2.3.21.1-150200.76.1
* dovecot23-fts-lucene-2.3.21.1-150200.76.1
* dovecot23-fts-solr-debuginfo-2.3.21.1-150200.76.1
* dovecot23-debugsource-2.3.21.1-150200.76.1
* dovecot23-fts-squat-2.3.21.1-150200.76.1
* dovecot23-backend-pgsql-2.3.21.1-150200.76.1
* dovecot23-backend-mysql-debuginfo-2.3.21.1-150200.76.1
* dovecot23-backend-sqlite-2.3.21.1-150200.76.1
* dovecot23-debuginfo-2.3.21.1-150200.76.1
* dovecot23-devel-2.3.21.1-150200.76.1
* dovecot23-fts-lucene-debuginfo-2.3.21.1-150200.76.1
* dovecot23-fts-solr-2.3.21.1-150200.76.1
* dovecot23-backend-sqlite-debuginfo-2.3.21.1-150200.76.1
* dovecot23-fts-squat-debuginfo-2.3.21.1-150200.76.1
* dovecot23-backend-pgsql-debuginfo-2.3.21.1-150200.76.1
* dovecot23-backend-mysql-2.3.21.1-150200.76.1
* dovecot23-fts-debuginfo-2.3.21.1-150200.76.1
* dovecot23-2.3.21.1-150200.76.1
## References:
* https://www.suse.com/security/cve/CVE-2024-23184.html
* https://www.suse.com/security/cve/CVE-2024-23185.html
* https://www.suse.com/security/cve/CVE-2025-59028.html
* https://www.suse.com/security/cve/CVE-2025-59031.html
* https://www.suse.com/security/cve/CVE-2025-59032.html
* https://www.suse.com/security/cve/CVE-2026-27852.html
* https://www.suse.com/security/cve/CVE-2026-27855.html
* https://www.suse.com/security/cve/CVE-2026-27856.html
* https://www.suse.com/security/cve/CVE-2026-27857.html
* https://www.suse.com/security/cve/CVE-2026-27858.html
* https://www.suse.com/security/cve/CVE-2026-27859.html
* https://www.suse.com/security/cve/CVE-2026-33263.html
* https://www.suse.com/security/cve/CVE-2026-33603.html
* https://www.suse.com/security/cve/CVE-2026-33604.html
* https://www.suse.com/security/cve/CVE-2026-33605.html
* https://www.suse.com/security/cve/CVE-2026-33606.html
* https://www.suse.com/security/cve/CVE-2026-33607.html
* https://www.suse.com/security/cve/CVE-2026-40014.html
* https://www.suse.com/security/cve/CVE-2026-40015.html
* https://www.suse.com/security/cve/CVE-2026-40016.html
* https://www.suse.com/security/cve/CVE-2026-40019.html
* https://www.suse.com/security/cve/CVE-2026-40020.html
* https://www.suse.com/security/cve/CVE-2026-40203.html
* https://www.suse.com/security/cve/CVE-2026-40205.html
* https://www.suse.com/security/cve/CVE-2026-42006.html
* https://www.suse.com/security/cve/CVE-2026-42007.html
* https://www.suse.com/security/cve/CVE-2026-42008.html
* https://www.suse.com/security/cve/CVE-2026-42391.html
* https://www.suse.com/security/cve/CVE-2026-42393.html
* https://www.suse.com/security/cve/CVE-2026-42395.html
* https://www.suse.com/security/cve/CVE-2026-52681.html
* https://www.suse.com/security/cve/CVE-2026-52687.html
* https://www.suse.com/security/cve/CVE-2026-73208.html
* https://www.suse.com/security/cve/CVE-2026-73209.html
* https://bugzilla.suse.com/show_bug.cgi?id=1229183
* https://bugzilla.suse.com/show_bug.cgi?id=1229184
* https://bugzilla.suse.com/show_bug.cgi?id=1260894
* https://bugzilla.suse.com/show_bug.cgi?id=1260895
* https://bugzilla.suse.com/show_bug.cgi?id=1260897
* https://bugzilla.suse.com/show_bug.cgi?id=1260898
* https://bugzilla.suse.com/show_bug.cgi?id=1260899
* https://bugzilla.suse.com/show_bug.cgi?id=1260900
* https://bugzilla.suse.com/show_bug.cgi?id=1260901
* https://bugzilla.suse.com/show_bug.cgi?id=1260902
* https://bugzilla.suse.com/show_bug.cgi?id=1265147
* https://bugzilla.suse.com/show_bug.cgi?id=1265148
* https://bugzilla.suse.com/show_bug.cgi?id=1265149
* https://bugzilla.suse.com/show_bug.cgi?id=1265150
* https://bugzilla.suse.com/show_bug.cgi?id=1276794
* https://bugzilla.suse.com/show_bug.cgi?id=1276795
* https://bugzilla.suse.com/show_bug.cgi?id=1276799
* https://bugzilla.suse.com/show_bug.cgi?id=1276800
* https://bugzilla.suse.com/show_bug.cgi?id=1276802
* https://bugzilla.suse.com/show_bug.cgi?id=1276804
* https://bugzilla.suse.com/show_bug.cgi?id=1276809
* https://bugzilla.suse.com/show_bug.cgi?id=1276811
* https://bugzilla.suse.com/show_bug.cgi?id=1276812
* https://bugzilla.suse.com/show_bug.cgi?id=1276815
* https://bugzilla.suse.com/show_bug.cgi?id=1276817
* https://bugzilla.suse.com/show_bug.cgi?id=1276820
* https://bugzilla.suse.com/show_bug.cgi?id=1276824
* https://bugzilla.suse.com/show_bug.cgi?id=1276826
* https://bugzilla.suse.com/show_bug.cgi?id=1276827
* https://bugzilla.suse.com/show_bug.cgi?id=1276828
* https://bugzilla.suse.com/show_bug.cgi?id=1276830
* https://bugzilla.suse.com/show_bug.cgi?id=1276833
* https://bugzilla.suse.com/show_bug.cgi?id=1276835
* https://bugzilla.suse.com/show_bug.cgi?id=1276837
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