CVE-2026-115508

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 Interaction

CVSS Vector Breakdown

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

Description

Crawl4AI 0.7.0 before 0.9.5 contains an inefficient regular expression complexity vulnerability in the Docker API server that allows authenticated API clients to supply unbounded regular expressions in /crawl request bodies. Attackers can submit catastrophic-backtracking patterns via RegexExtractionStrategy.custom, RegexChunking.patterns or JsonCss, JsonXPath and JsonLxml schema regex fields against a crafted page to freeze the entire server, including /health.

Weakness Classification (1)

Affected Software (2)

VendorProductVersion
unclecode crawl4ai 0.7.0 < 0.9.5
unclecode crawl4ai 0.7.0 < 0.9.5

Bug Bounty Relevance

64 / 100
✓ Network accessible
✓ Low complexity
✓ No user interaction

CVSS Score

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

EPSS — Exploitation Probability

0.46%
Raw Score 0.004590
Percentile 39.7%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00459
2026-10-28
0.00305

Intelligence Sources

mitre ref →
nvd ref →