NVD HIGH: CVE-2026-115355 — Mistune before 3.3.0 contains a path traversal vulnerability in the Include dire...

Thursday, October 22, 2026 at 07:17 PM UTC·Source: NIST NVD

Updated: Wednesday, October 28, 2026 at 02:02 AM UTC

Executive Summary

Mistune before 3.3.0 contains a path traversal vulnerability in the Include directive that allows attackers to read arbitrary files by supplying ../ sequences in include paths. Attackers can also inject HTML through unescaped error messages and included file contents to perform cross-site scripting even when escape=True is set.

Analysis

Indicators of Compromise (1)

CVE (1)

CVE-2026-115355

NVD MITRE CVE

Source Attribution

Originally published by NIST NVD on Oct 22, 2026. Verified by: NIST.

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