Dashboard / CVE-2026-115349

CVE-2026-115349

HIGH
MEDIUM Priority: 0.03 BB Relevance: 77/100
Published: 2026-10-22 Modified: 2026-10-26 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity No Auth No Interaction

CVSS Vector Breakdown

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

Description

Mistune from 3.0.0 before 3.3.0 contains an algorithmic complexity denial of service vulnerability in the parse_link_text function in src/mistune/helpers.py. Attackers can submit markdown with deeply nested square brackets triggering quadratic parsing time, exhausting server CPU with small crafted requests.

Weakness Classification (1)

References & Advisories (2)

Bug Bounty Relevance

77 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

8.7 / 10.0 v4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

EPSS — Exploitation Probability

0.34%
Raw Score 0.003440
Percentile 27.9%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00344
2026-10-28
0.00344

Intelligence Sources

mitre ref →
nvd ref →

External Links