Crawl4AI before 0.9.5 contains an improper certificate validation vulnerability that allows network attackers to
Source GCVE Database
Not known to be exploited · CVSS 8.3 High : upgrade to 0.9.5 soon.
Data as of 29 Oct 2026, 19:45 UTC
Thin evidence
One scorer or none| CNA (VulnCheck) | CVSS 4.0 | 8.3 |
|---|---|---|
| CNA (VulnCheck) | CVSS 3.1 | 6.5 |
- Patch
- Available – fixed in 0.9.5
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:NExploitation evidence
Disclosed: evidence found.
CVE published 29 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.
What to do
Upgrade crawl4ai to 0.9.5.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| unclecodecrawl4ai | Affected
| Fixed in
|
PyPIcrawl4aipkg:pypi/crawl4aiOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
A fixed version 0.9.5 or later should be used to address this vulnerability. Until patched, avoid deploying vulnerable versions in untrusted network environments. There is no indication that this vulnerability is mitigated or that no action is required.
Description
Crawl4AI versions before 0.9.5 have an improper certificate validation vulnerability due to Chromium launching with the --ignore-certificate-errors flag. This allows network attackers performing man-in-the-middle or DNS-based attacks to intercept crawler traffic, serve forged content, and access cookies and headers. Additionally, a hard-coded --no-sandbox flag disables sandbox protections.