| Name | CVE-2026-59924 |
| Description | Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.3.0, Include.parse() joins and normalizes user-supplied include paths without verifying that the result remains within the intended markdown directory, allowing crafted include paths to access files outside that directory when markdown files are processed using md.read(). This issue is fixed in version 3.3.0. |
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| Debian Bugs | 1141770 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| mistune (PTS) | bullseye | 0.8.4-4 | fixed |
| bookworm | 2.0.4-1 | vulnerable | |
| trixie | 3.1.3-1 | vulnerable | |
| forky, sid | 3.1.4-1 | vulnerable |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| mistune | source | bullseye | (not affected) | |||
| mistune | source | (unstable) | (unfixed) | 1141770 |
[trixie] - mistune <no-dsa> (Minor issue)
[bookworm] - mistune <postponed> (Minor issue)
[bullseye] - mistune <not-affected> (Directive system introduced after 0.8.4)
https://github.com/lepture/mistune/security/advisories/GHSA-r4rv-85jg-w4mf
https://github.com/lepture/mistune/security/advisories/GHSA-r4rv-85jg-w4mf
Fixed by: https://github.com/lepture/mistune/commit/1bef343ade163fc3bb95572b15be720084cdb993 (v3.3.0)