SUSE-SU-2026:22655-1: moderate: Security update for python-mistune
SLE-UPDATES
null at suse.de
Thu Jul 16 16:31:17 UTC 2026
# Security update for python-mistune
Announcement ID: SUSE-SU-2026:22655-1
Release Date: 2026-07-14T10:41:18Z
Rating: moderate
References:
* bsc#1271082
* bsc#1271117
* bsc#1271119
* bsc#1271121
* bsc#1271125
* bsc#1271127
* bsc#1271128
* bsc#1271131
* bsc#1271132
Cross-References:
* CVE-2026-44896
* CVE-2026-59922
* CVE-2026-59923
* CVE-2026-59924
* CVE-2026-59925
* CVE-2026-59926
* CVE-2026-59927
* CVE-2026-59928
* CVE-2026-59929
* CVE-2026-59930
CVSS scores:
* CVE-2026-44896 ( SUSE ): 5.3
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N
* CVE-2026-44896 ( SUSE ): 6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
* CVE-2026-44896 ( NVD ): 5.3
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
* CVE-2026-44896 ( NVD ): 6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
* CVE-2026-59922 ( 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-2026-59922 ( SUSE ): 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
* CVE-2026-59922 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
* CVE-2026-59923 ( SUSE ): 5.1
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
* CVE-2026-59923 ( SUSE ): 5.4 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
* CVE-2026-59923 ( NVD ): 6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
* CVE-2026-59924 ( SUSE ): 8.2
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
* CVE-2026-59924 ( SUSE ): 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
* CVE-2026-59924 ( NVD ): 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
* CVE-2026-59925 ( 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-2026-59925 ( SUSE ): 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
* CVE-2026-59925 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
* CVE-2026-59926 ( SUSE ): 5.1
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
* CVE-2026-59926 ( SUSE ): 5.4 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
* CVE-2026-59926 ( NVD ): 5.3
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
* CVE-2026-59926 ( NVD ): 6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
* CVE-2026-59927 ( 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-2026-59927 ( SUSE ): 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
* CVE-2026-59927 ( NVD ): 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
* CVE-2026-59928 ( 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-2026-59928 ( SUSE ): 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
* CVE-2026-59928 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
* CVE-2026-59929 ( SUSE ): 5.4 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
* CVE-2026-59929 ( NVD ): 6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
* CVE-2026-59930 ( SUSE ): 4.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
* CVE-2026-59930 ( NVD ): 4.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
Affected Products:
* SUSE Linux Enterprise Server 16.0
* SUSE Linux Enterprise Server for SAP applications 16.0
An update that solves 10 vulnerabilities can now be installed.
## Description:
This update for python-mistune fixes the following issues
* CVE-2026-59922: quadratic-time parsing on long runs of some markers in
`formatting.py` can lead to DoS (bsc#1271117).
* CVE-2026-59923: `HTMLRenderer.safe_url()` does not block percent-encoded
javascript URIs and allows for XSS (bsc#1271119).
* CVE-2026-59924: improper processing of user-supplied include paths in
`Include.parse()` can lead to path traversal and arbitrary file reads
(bsc#1271121).
* CVE-2026-59925: quadratic-time parsing on long runs of some emphasis pairs
in `inline_parser` can lead to DoS (bsc#1271125).
* CVE-2026-59926: improper escaping in `render_admonition()` can lead to
atribute injection and XSS (bsc#1271127).
* CVE-2026-59927: uncontrolled recursion when processing two markdown files
that include each other can lead to a DoS (bsc#1271128).
* CVE-2026-59928: quadratic-time parsing on long lists of repeated reference-
link definitions in `block_parser` can lead to DoS (bsc#1271131).
* CVE-2026-59929: HARMFUL_PROTOCOLS list misses legacy and chained schemes and
allow arbitrary script execution in user agents (bsc#1271132).
* CVE-2026-59930: the `toc` plugin and `TableOfContents` directive generate
heading IDs with predictable values and allow for collisions with attacker-
controlled `id="toc_N"` content (bsc#1271082).
## 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 16.0
zypper in -t patch SUSE-SLES-16.0-1243=1
* SUSE Linux Enterprise Server for SAP applications 16.0
zypper in -t patch SUSE-SLES-16.0-1243=1
## Package List:
* SUSE Linux Enterprise Server 16.0 (noarch)
* python313-mistune-3.1.3-160000.5.1
* SUSE Linux Enterprise Server for SAP applications 16.0 (noarch)
* python313-mistune-3.1.3-160000.5.1
## References:
* https://www.suse.com/security/cve/CVE-2026-44896.html
* https://www.suse.com/security/cve/CVE-2026-59922.html
* https://www.suse.com/security/cve/CVE-2026-59923.html
* https://www.suse.com/security/cve/CVE-2026-59924.html
* https://www.suse.com/security/cve/CVE-2026-59925.html
* https://www.suse.com/security/cve/CVE-2026-59926.html
* https://www.suse.com/security/cve/CVE-2026-59927.html
* https://www.suse.com/security/cve/CVE-2026-59928.html
* https://www.suse.com/security/cve/CVE-2026-59929.html
* https://www.suse.com/security/cve/CVE-2026-59930.html
* https://bugzilla.suse.com/show_bug.cgi?id=1271082
* https://bugzilla.suse.com/show_bug.cgi?id=1271117
* https://bugzilla.suse.com/show_bug.cgi?id=1271119
* https://bugzilla.suse.com/show_bug.cgi?id=1271121
* https://bugzilla.suse.com/show_bug.cgi?id=1271125
* https://bugzilla.suse.com/show_bug.cgi?id=1271127
* https://bugzilla.suse.com/show_bug.cgi?id=1271128
* https://bugzilla.suse.com/show_bug.cgi?id=1271131
* https://bugzilla.suse.com/show_bug.cgi?id=1271132
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