CVE-2026-59927
2 advisories.
PyPI/mistune CVE-2026-59927: medium 5.3, EPSS 0.53%
Mistune directives/include: mutual `.. include::` recursion crashes the renderer with `RecursionError`, denial of service via two attacker-controlled markdown files
Action: Upgrade mistune to 3.3.0 or later.
pip install mistune==3.3.0Affected
| introduced | fixed | last affected |
|---|---|---|
| 0 | 3.3.0 | - |
Fixed versions
| 3.3.0 |
Sources
- osv: GHSA-8mpj-m6qm-5qr8
- https://github.com/lepture/mistune/security/advisories/GHSA-8mpj-m6qm-5qr8
- https://nvd.nist.gov/vuln/detail/CVE-2026-59927
- https://github.com/lepture/mistune/commit/1bef343ade163fc3bb95572b15be720084cdb993
- https://github.com/lepture/mistune
- https://github.com/lepture/mistune/releases/tag/v3.3.0
- https://github.com/pypa/advisory-database/tree/main/vulns/mistune/PYSEC-2026-2215.yaml
CVE-2026-59927 · published · modified · JSON
PyPI/mistune CVE-2026-59927: medium 5.3, EPSS 0.53%
Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.3.0, the Include directive in src/mistune/directives/include.py detects only direct self-includes and not indirect cycles, al
Action: Upgrade mistune to 3.3.0 or later.
pip install mistune==3.3.0Affected
| introduced | fixed | last affected |
|---|---|---|
| 0 | 3.3.0 | - |
Fixed versions
| 3.3.0 |
Sources
- osv: PYSEC-2026-2215
- https://github.com/lepture/mistune/releases/tag/v3.3.0
- https://github.com/lepture/mistune/commit/1bef343ade163fc3bb95572b15be720084cdb993
- https://github.com/lepture/mistune/security/advisories/GHSA-8mpj-m6qm-5qr8
CVE-2026-59927 · published · modified · JSON