What is CVE-2026-56265?

CVE-2026-56265 is a critical-severity vulnerability in Crawl4ai, classified under Use of Hard-coded Credentials. CVSS score: 9.8/10. Published 2026-06-21.

How severe is CVE-2026-56265?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Vulnerability in Crawl4ai

CVE-2026-56265

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 aut…

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Crawl4ai — versions 0, 0.8.7

Weakness classification (CWE)

CWE-798 — Use of Hard-coded Credentials

References

disclosure@vulncheck.com (vendor-advisory)
disclosure@vulncheck.com (product)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2026-56265?: CVE-2026-56265 is a critical-severity vulnerability in Crawl4ai, classified under Use of Hard-coded Credentials. CVSS score: 9.8/10. Published 2026-06-21.
How severe is CVE-2026-56265?: Critical severity. CVSS v3 base score is 9.8 out of 10.