MEDIUM 5.3 NVD
CVE-2026-115350
Mistune 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
Mistune 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.
References
- https://github.com/lepture/mistune/security/advisories/GHSA-96vr-jm8v-g22j
- https://www.vulncheck.com/advisories/mistune-before-3.3.0-stored-xss-via-include-directive
This medium severity vulnerability with a CVSS score of 5.3 was published on 2026-10-22 via NVD.
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