SUSE-SU-2026:1964-1: important: Security update for rmt-server
SLE-UPDATES
null at suse.de
Mon May 18 16:31:48 UTC 2026
# Security update for rmt-server
Announcement ID: SUSE-SU-2026:1964-1
Release Date: 2026-05-18T08:10:10Z
Rating: important
References:
* bsc#1246976
* bsc#1261388
* bsc#1261398
* bsc#1261406
* bsc#1261417
* bsc#1261426
* bsc#1261436
* bsc#1261447
* bsc#1261458
* bsc#1261466
* bsc#1261471
Cross-References:
* CVE-2026-26961
* CVE-2026-26962
* CVE-2026-34230
* CVE-2026-34763
* CVE-2026-34785
* CVE-2026-34786
* CVE-2026-34826
* CVE-2026-34829
* CVE-2026-34830
* CVE-2026-34831
CVSS scores:
* CVE-2026-26961 ( SUSE ): 6.3
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
* CVE-2026-26961 ( SUSE ): 3.7 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
* CVE-2026-26961 ( NVD ): 3.7 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
* CVE-2026-26961 ( NVD ): 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
* CVE-2026-26962 ( SUSE ): 6.3
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
* CVE-2026-26962 ( SUSE ): 4.8 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
* CVE-2026-26962 ( NVD ): 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
* CVE-2026-26962 ( NVD ): 4.8 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
* CVE-2026-34230 ( 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-2026-34230 ( SUSE ): 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
* CVE-2026-34230 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
* CVE-2026-34230 ( NVD ): 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
* CVE-2026-34763 ( 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-2026-34763 ( SUSE ): 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
* CVE-2026-34763 ( NVD ): 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
* CVE-2026-34785 ( SUSE ): 8.7
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
* CVE-2026-34785 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
* CVE-2026-34785 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
* CVE-2026-34786 ( SUSE ): 6.9
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
* CVE-2026-34786 ( SUSE ): 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
* CVE-2026-34786 ( NVD ): 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
* CVE-2026-34826 ( 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-2026-34826 ( SUSE ): 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
* CVE-2026-34826 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
* CVE-2026-34826 ( NVD ): 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
* CVE-2026-34829 ( 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-2026-34829 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
* CVE-2026-34829 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
* CVE-2026-34830 ( SUSE ): 8.2
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
* CVE-2026-34830 ( SUSE ): 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
* CVE-2026-34830 ( NVD ): 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
* CVE-2026-34830 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
* CVE-2026-34831 ( SUSE ): 6.3
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
* CVE-2026-34831 ( SUSE ): 4.8 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
* CVE-2026-34831 ( NVD ): 4.8 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
* CVE-2026-34831 ( NVD ): 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Affected Products:
* openSUSE Leap 15.4
* Public Cloud Module 15-SP4
* SUSE Linux Enterprise High Performance Computing 15 SP4
* SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4
* SUSE Linux Enterprise High Performance Computing LTSS 15 SP4
* SUSE Linux Enterprise Server 15 SP4
* SUSE Linux Enterprise Server 15 SP4 LTSS
* SUSE Linux Enterprise Server for SAP Applications 15 SP4
* SUSE Manager Proxy 4.3
* SUSE Manager Retail Branch Server 4.3
* SUSE Manager Server 4.3
An update that solves 10 vulnerabilities and has one security fix can now be
installed.
## Description:
This update for rmt-server fixes the following issues
* CVE-2026-26961: rack: mismatch in header handling can allow to smuggle
multipart content (bsc#1261398).
* CVE-2026-26962: rack: improper unfolding of folded multipart headers can
lead to header injection or response splitting (bsc#1261471).
* CVE-2026-34230: rack: crafted Accept-Encoding header can cause a denial of
service (bsc#1261388).
* CVE-2026-34763: rack: failing of the prefix stripping can lead to
information disclosure (bsc#1261406).
* CVE-2026-34785: rack: prefix matching can expose unintended files under the
static root (bsc#1261417).
* CVE-2026-34786: rack: URL-encoded path mismatch can lead to `header_rules`
bypass (bsc#1261426).
* CVE-2026-34826: rack: multipart byte range processing can allow denial of
service (bsc#1261436).
* CVE-2026-34829: rack: multipart parsing without `Content-Length` header
allows unbounded chunked file uploads (bsc#1261447).
* CVE-2026-34830: rack: crafted `X-Accel-Mapping`headers can lead to regex
injection (bsc#1261458).
* CVE-2026-34831: rack: `Content-Length` mismatch can lead to incorrectly
framed error responses (bsc#1261466).
Other fixes:
* Update to version 2.27
## 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:
* openSUSE Leap 15.4
zypper in -t patch SUSE-2026-1964=1
* Public Cloud Module 15-SP4
zypper in -t patch SUSE-SLE-Module-Public-Cloud-15-SP4-2026-1964=1
* SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4
zypper in -t patch SUSE-SLE-Product-HPC-15-SP4-ESPOS-2026-1964=1
* SUSE Linux Enterprise High Performance Computing LTSS 15 SP4
zypper in -t patch SUSE-SLE-Product-HPC-15-SP4-LTSS-2026-1964=1
* SUSE Linux Enterprise Server 15 SP4 LTSS
zypper in -t patch SUSE-SLE-Product-SLES-15-SP4-LTSS-2026-1964=1
* SUSE Linux Enterprise Server for SAP Applications 15 SP4
zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP4-2026-1964=1
## Package List:
* openSUSE Leap 15.4 (aarch64 ppc64le s390x x86_64)
* rmt-server-pubcloud-2.27-150400.3.54.1
* rmt-server-2.27-150400.3.54.1
* rmt-server-debuginfo-2.27-150400.3.54.1
* rmt-server-debugsource-2.27-150400.3.54.1
* rmt-server-config-2.27-150400.3.54.1
* Public Cloud Module 15-SP4 (aarch64 ppc64le s390x x86_64)
* rmt-server-debuginfo-2.27-150400.3.54.1
* rmt-server-debugsource-2.27-150400.3.54.1
* rmt-server-pubcloud-2.27-150400.3.54.1
* SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4 (aarch64
x86_64)
* rmt-server-debuginfo-2.27-150400.3.54.1
* rmt-server-config-2.27-150400.3.54.1
* rmt-server-debugsource-2.27-150400.3.54.1
* rmt-server-2.27-150400.3.54.1
* SUSE Linux Enterprise High Performance Computing LTSS 15 SP4 (aarch64
x86_64)
* rmt-server-debuginfo-2.27-150400.3.54.1
* rmt-server-config-2.27-150400.3.54.1
* rmt-server-debugsource-2.27-150400.3.54.1
* rmt-server-2.27-150400.3.54.1
* SUSE Linux Enterprise Server 15 SP4 LTSS (aarch64 ppc64le s390x x86_64)
* rmt-server-debuginfo-2.27-150400.3.54.1
* rmt-server-config-2.27-150400.3.54.1
* rmt-server-debugsource-2.27-150400.3.54.1
* rmt-server-2.27-150400.3.54.1
* SUSE Linux Enterprise Server for SAP Applications 15 SP4 (ppc64le x86_64)
* rmt-server-debuginfo-2.27-150400.3.54.1
* rmt-server-config-2.27-150400.3.54.1
* rmt-server-debugsource-2.27-150400.3.54.1
* rmt-server-2.27-150400.3.54.1
## References:
* https://www.suse.com/security/cve/CVE-2026-26961.html
* https://www.suse.com/security/cve/CVE-2026-26962.html
* https://www.suse.com/security/cve/CVE-2026-34230.html
* https://www.suse.com/security/cve/CVE-2026-34763.html
* https://www.suse.com/security/cve/CVE-2026-34785.html
* https://www.suse.com/security/cve/CVE-2026-34786.html
* https://www.suse.com/security/cve/CVE-2026-34826.html
* https://www.suse.com/security/cve/CVE-2026-34829.html
* https://www.suse.com/security/cve/CVE-2026-34830.html
* https://www.suse.com/security/cve/CVE-2026-34831.html
* https://bugzilla.suse.com/show_bug.cgi?id=1246976
* https://bugzilla.suse.com/show_bug.cgi?id=1261388
* https://bugzilla.suse.com/show_bug.cgi?id=1261398
* https://bugzilla.suse.com/show_bug.cgi?id=1261406
* https://bugzilla.suse.com/show_bug.cgi?id=1261417
* https://bugzilla.suse.com/show_bug.cgi?id=1261426
* https://bugzilla.suse.com/show_bug.cgi?id=1261436
* https://bugzilla.suse.com/show_bug.cgi?id=1261447
* https://bugzilla.suse.com/show_bug.cgi?id=1261458
* https://bugzilla.suse.com/show_bug.cgi?id=1261466
* https://bugzilla.suse.com/show_bug.cgi?id=1261471
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