CVE-2026-115355
HIGH
NVD
CVSS Score
7.5
Severity
HIGH
Published
Oct 22, 2026
Vendor
unknown
Description
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.