Algorithmic Complexity Affecting python313-mistune package, versions <3.1.3-160000.5.1


Severity

Recommended
0.0
medium
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.41% (34th percentile)

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  • Snyk IDSNYK-SLES1600-PYTHON313MISTUNE-17999981
  • published17 Jul 2026
  • disclosed14 Jul 2026

Introduced: 14 Jul 2026

CVE-2026-59925  (opens in a new tab)
CWE-407  (opens in a new tab)
CWE-1333  (opens in a new tab)

How to fix?

Upgrade SLES:16.0.0 python313-mistune to version 3.1.3-160000.5.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python313-mistune package and not the python313-mistune package as distributed by SLES. See How to fix? for SLES:16.0.0 relevant fixed versions and status.

Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.3.0, long sequences of well-formed double-asterisk or triple-asterisk emphasis pairs around a character cause quadratic work in src/mistune/inline_parser.py because the parser scans forward for matching close markers from every potential opening run, allowing denial of service in default Mistune parsing. This issue is fixed in version 3.3.0.

CVSS Base Scores

version 3.1