Description
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.
Problem types
CWE-407: Inefficient Algorithmic Complexity
CWE-1333: Inefficient Regular Expression Complexity
Product status
References
github.com/...istune/security/advisories/GHSA-4j32-57v6-6g45
github.com/...ommit/5de41fb8e527004dbc363e047a3c380c9288c74f
github.com/lepture/mistune/releases/tag/v3.3.0