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.
CVE-2026-56265
Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-06-21. the CNA's CVSS baseline 9.8; sources differ by 0.0.
- High severity, but no confirmed exploitation yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 9.8
- EG Score
- 9.8(medium)
- EG Risk
- 75(Attend)EG Risk 75/100SSVC: Attend
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity98% × 45%Exploitation40% × 40%Automatability100% × 15%Action: Remediate soon — notable exploitation risk. - EPSS PROB
- 3%
- EPSS %ILE
- 84%
- KEV
- Not listed
Published
June 21, 2026
Last Modified
July 14, 2026
Advisory Details (3)
Auto-updated Aug 22, 2026Crawl4AI - Authentication Bypass via Hardcoded JWT Signing Key | Advisories | VulnCheck
https://www.vulncheck.com/advisories/crawl4ai-authentication-bypass-via-hardcoded-jwt-signing-keyGitHub - unclecode/crawl4ai: 🚀🤖 Crawl4AI: Open-source LLM Friendly Web Crawler & Scraper. Don't be shy, join here: https://discord.gg/jP8KfhDhyN · GitHub
https://github.com/unclecode/crawl4aiMultiple Docker API Vulnerabilities - File Write, SSRF, Auth Bypass, XSS, JS Execution · Advisory · unclecode/crawl4ai · GitHub
https://github.com/unclecode/crawl4ai/security/advisories/GHSA-365w-hqf6-vxfgVendor Advisories for CVE-2026-56265(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Affected Packages
(1 across 1 ecosystem)
PyPI(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| crawl4ai | 0.3.0 ... 0.8.6 (64 versions) | 0.8.7 | — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 23× in last 7d / 189× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
Showing the most recent 100 of 419 total refreshes for this CVE.
- 2026-08-28 21:41 UTCEPSS rescore
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- 2026-08-10 18:42 UTCGHSA enrichment
Publicly available exploits
(1 reference)Working exploit code is in the public domain. Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.
- Nucleihttp/cves/2026/CVE-2026-56265.yamlFirst seen Jan 1, 2026
Crawl4AI < 0.8.7 - Hardcoded JWT Signing Key Authentication Bypass
Open source ↗
Related CVEs(same CWE)
Same CWE
10 shownCWE-798
Frequently asked(5)
What is CVE-2026-56265?
When was CVE-2026-56265 disclosed?
Is CVE-2026-56265 actively exploited?
What is the CVSS score of CVE-2026-56265?
How do I remediate CVE-2026-56265?
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-56265
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