CVE-2026-115354

HIGH
MEDIUM Priority: 0.03 BB Relevance: 64/100
Published: 2026-10-22 Modified: 2026-10-29 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity No Auth Conf. Impact

CVSS Vector Breakdown

AV: Network
AC: Low
PR: None
UI: Passive
AT: None
VC: High
VI: None
VA: None

Description

Mistune before 3.3.0 contains a path traversal vulnerability in the opt-in Include directive that allows attackers to read local files by supplying relative or absolute include paths. Attackers who submit Markdown rendered via Markdown.read() can disclose files such as /etc/passwd and inject unescaped HTML or script content into rendered output.

Weakness Classification (1)

Affected Software (1)

VendorProductVersion
lepture mistune 0 < 3.3.0

Bug Bounty Relevance

64 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity

CVSS Score

7.1 / 10.0 v4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

EPSS — Exploitation Probability

0.47%
Raw Score 0.004700
Percentile 40.6%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00470
2026-10-28
0.00333

Intelligence Sources

mitre ref →
nvd ref →