CVE-2026-59925 (GCVE-0-2026-59925)
Vulnerability from cvelistv5
Published
2026-07-08 16:18
Modified
2026-07-08 19:44
CWE
  • CWE-407 - Inefficient Algorithmic Complexity
  • CWE-1333 - Inefficient Regular Expression Complexity
Summary
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.
Impacted products
Vendor Product Version
lepture mistune Version: < 3.3.0
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Show details on NVD website


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