CVE-2026-115350
Mistune before 3.3.0 Stored XSS via Include Directive HTML Files
CVSS Score
6.1
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-79 |
| Vendor | lepture |
| Product | mistune |
| Published | Oct 22, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None
Affected Versions
lepture / mistune
0 < 3.3.0
References
Credits
🔍 offset