by Kastro
Paper/Archive/CVE-2026-56265

CVE-2026-56265

Crawl4AI Crawl4AI — Crawl4AI - Authentication Bypass via Hardcoded JWT Signing Key

EPSS 3%public exploitCVSS 9.8
critical.is priorityof 100
57
CVSS 9.8 (CNA)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 85.6.856 × 2017.1Exploit: SSVC poc+1010.0SSVC exploitation: poc+100.0
Description · from the CVE record

Crawl4AI before 0.8.7 contains an authentication bypass vulnerability due to a hardcoded default JWT signing key in the Docker API server. Attackers who know the default key can forge valid authentication tokens for any user, bypassing authentication and gaining full access to protected functionality.

Affected

ProductAffectedFixed inSource
Crawl4AI< 0.8.70.8.7CNA

Scores by source

VulnCheck (CNA)9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
VulnCheck (CNA)9.3CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CISA ADPSSVCExploitation: poc · Automatable: yes · Technical impact: total

References

exploitgithub.com/unclecode/crawl4ai/security/advisories/GHSA-365w-hqf6-vxfgrefgithub.com/unclecode/crawl4aiwriteupvulncheck.com/advisories/crawl4ai-authentication-bypass-via-hardcoded-jwt-signing-key