Vulnerability · Published Oct 29, 2026 · Assigned by VulnCheck

CVE-2026-119118Crawl4AI before 0.9.5 Improper Certificate Validation via Hard-coded Chromium Flags

Medium 6.5

In plain English

A medium-severity improper certificate validation in crawl4ai from unclecode. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 8% of all known vulnerabilities).

Severity (CVSS 3.1)6.5Medium

Exploit odds (30 days)0.2%top 91.7% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

Crawl4AI before 0.9.5 contains an improper certificate validation vulnerability that allows network attackers to intercept crawls because Chromium always launches with --ignore-certificate-errors. Man-in-the-middle or DNS-controlling attackers can serve forged content to the crawler and read cookies and headers sent, while hard-coded --no-sandbox also overrides CRAWL4AI_CHROMIUM_SANDBOX.

Affected products (as reported)

Vendor	Product	Versions
unclecode	crawl4ai	0 – before 0.9.5

Weakness: CWE-295 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N

References

GitHub Security Advisory (GHSA-j2qh-f73r-mg3q) vendor-advisory
VulnCheck Advisory: Crawl4AI before 0.9.5 Improper Certificate Validation via Hard-coded Chromium Flags third-party-advisory