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openSUSE 16 Security Update : python-mistune (openSUSE-SU-2026:20827-1)

high Nessus Plugin ID 318089

Synopsis

The remote openSUSE host is missing one or more security updates.

Description

The remote openSUSE 16 host has a package installed that is affected by multiple vulnerabilities as referenced in the openSUSE-SU-2026:20827-1 advisory.

 This update for python-mistune fixes the following issues

 - CVE-2026-33079: ReDoS in `LINK_TITLE_RE` can lead to denial of service via a crafted Markdown (bsc#1264347).
 - CVE-2026-33441: processing of malformed reference links can lead to excessive resource consumption and denial of service (bsc#1264752).
 - CVE-2026-44708: improper HTML escaping in the math plugin can lead to XSS (bsc#1264751).
 - CVE-2026-44896: improper escaping in `render_figure` can lead to attribute injection and XSS (bsc#1264754).
 - CVE-2026-44897: improper sanitization of user-controlled input in `HTMLRenderer.heading` can lead to XSS (bsc#1264750).
 - CVE-2026-44898: improper sanitization of user-supplied HTML input in `render_toc_ul` can lead to XSS (bsc#1265052).
 - CVE-2026-44899: improper input verification in Image directive plugin and improper escaping in `render_block_image` can lead to CSS injection (bsc#1265053).

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the affected python313-mistune package.

See Also

https://bugzilla.suse.com/1264347

https://bugzilla.suse.com/1264750

https://bugzilla.suse.com/1264751

https://bugzilla.suse.com/1264752

https://bugzilla.suse.com/1264754

https://bugzilla.suse.com/1265052

https://bugzilla.suse.com/1265053

https://www.suse.com/security/cve/CVE-2026-33079

https://www.suse.com/security/cve/CVE-2026-44708

https://www.suse.com/security/cve/CVE-2026-44896

https://www.suse.com/security/cve/CVE-2026-44897

https://www.suse.com/security/cve/CVE-2026-44898

https://www.suse.com/security/cve/CVE-2026-44899

Plugin Details

Severity: High

ID: 318089

File Name: openSUSE-2026-20827-1.nasl

Version: 1.1

Type: Local

Agent: unix

Published: 6/1/2026

Updated: 6/1/2026

Supported Sensors: Nessus Agent, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 6.4

Temporal Score: 5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:N

CVSS Score Source: CVE-2026-44899

CVSS v3

Risk Factor: Medium

Base Score: 6.1

Temporal Score: 5.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

CVSS v4

Risk Factor: High

Base Score: 7.7

Threat Score: 7.7

Threat Vector: CVSS:4.0/E:P

Vector: 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

CVSS Score Source: CVE-2026-33079

Vulnerability Information

CPE: cpe:/o:novell:opensuse:16.0, p-cpe:/a:novell:opensuse:python313-mistune

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/SuSE/release, Host/SuSE/rpm-list

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 5/28/2026

Vulnerability Publication Date: 5/6/2026

Reference Information

CVE: CVE-2026-33079, CVE-2026-44708, CVE-2026-44896, CVE-2026-44897, CVE-2026-44898, CVE-2026-44899