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CVE PROGRAM SOURCE RECORD5.3 Medium

CVE-2026-115350

Mistune before 3.3.0 Stored XSS via Include Directive HTML Files

Description

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

lepture mistune

Default version status: unaffected

  • 0 to < 3.3.0affected
  • 3.3.0unaffected
pkg:pypi/mistune

References