by Kastro
Paper/Archive/CVE-2026-115353

CVE-2026-115353

lepture mistune — Mistune before 3.3.0 Path Traversal via include Directive

EPSS 0.4%CVSS 9.2
critical.is priorityof 100
34
CVSS 9.2 (CNA)9.2 / 10 × 3027.6Not in CISA KEV+300.0EPSS percentile 32.8.328 × 206.6No public exploit+100.0SSVC exploitation: unknown+100.0
Description · from the CVE record

Mistune before 3.3.0 contains a path traversal vulnerability in the RST include directive that allows attackers to read arbitrary files by supplying relative or absolute paths. Attackers can submit markdown containing include directives referencing ../ sequences or absolute paths to embed sensitive files like credentials or environment data in rendered HTML.

Affected

ProductAffectedFixed inSource
mistune< 3.3.03.3.0CNA

Scores by source

VulnCheck (CNA)9.2CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N
VulnCheck (CNA)8.6CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N

References

advisorygithub.com/lepture/mistune/security/advisories/GHSA-9jjx-3hq3-hx4jwriteupvulncheck.com/advisories/mistune-before-3.3.0-path-traversal-via-include-directive