CVE-2026-115350

NameCVE-2026-115350
DescriptionMistune before 3.3.0 contains a cross-site scripting vulnerability in the Include directive that emits included .html, .xhtml, or .htm file content as raw block_html tokens. Attackers who can plant an HTML file readable by the renderer can reference it via an include directive, combined with path traversal, to execute stored scripts when escape=False is set.
SourceCVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
mistune (PTS)bookworm2.0.4-1vulnerable
trixie3.1.3-1vulnerable
forky3.1.4-1vulnerable
sid3.4.0-1fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
mistunesource(unstable)3.3.4-1

Notes

https://github.com/lepture/mistune/security/advisories/GHSA-96vr-jm8v-g22j

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