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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.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Aug 13, 2026 | Jul 8, 2026 |
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