CVE-2026-56265

Crawl4AI - Authentication Bypass via Hardcoded JWT Signing Key

Published Jun 21, 2026 CVSS 4.0 · 9.3 Critical EPSS 2.6% KEV · Not listed
Description
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Github GHSA Github GHSA GHSA-8qrg-7j2f-rf2h Crawl4AI: authentication bypass vulnerability due to a hardcoded default JWT signing key in the Docker API server
History
Type Values Removed Values Added
First Time appeared Kidocode
Kidocode crawl4ai
CPEs cpe:2.3:a:kidocode:crawl4ai:*:*:*:*:*:*:*:*
Vendors & Products Kidocode
Kidocode crawl4ai
Type Values Removed Values Added
First Time appeared Crawl4ai
Crawl4ai crawl4ai
Vendors & Products Crawl4ai
Crawl4ai crawl4ai
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description 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.
Title Crawl4AI - Authentication Bypass via Hardcoded JWT Signing Key
Weaknesses CWE-798
References
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 9.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
VulnCheck
Published
Updated
Nov 8, 2026, 2:05 PM
Reserved
Jun 20, 2026, 1:42 AM
Status
Analyzed
Published
Jun 21, 2026, 2:16 PM
Modified
Jun 26, 2026, 1:52 PM