CVE-2026-56265
Crawl4AI - Authentication Bypass via Hardcoded JWT Signing Key
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.
INFO
Published Date :
June 21, 2026, 2:16 p.m.
Last Modified :
June 26, 2026, 1:52 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | CRITICAL | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 3.1 | CRITICAL | MITRE-CVE | ||||
| CVSS 3.1 | CRITICAL | [email protected] | ||||
| CVSS 4.0 | CRITICAL | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 4.0 | CRITICAL | [email protected] |
Solution
- Update Crawl4AI to version 0.8.7 or later.
- Change the default JWT signing key.
- Restart the Docker API server after updates.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-56265.
| URL | Resource |
|---|---|
| https://github.com/unclecode/crawl4ai | Product |
| https://github.com/unclecode/crawl4ai/security/advisories/GHSA-365w-hqf6-vxfg | Mitigation Vendor Advisory |
| https://www.vulncheck.com/advisories/crawl4ai-authentication-bypass-via-hardcoded-jwt-signing-key | Third Party Advisory |
| https://github.com/unclecode/crawl4ai/security/advisories/GHSA-365w-hqf6-vxfg | Mitigation Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-56265 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-56265
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-56265 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-56265 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Jun. 26, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:kidocode:crawl4ai:*:*:*:*:*:*:*:* versions up to (excluding) 0.8.7 Added Reference Type VulnCheck: https://github.com/unclecode/crawl4ai Types: Product Added Reference Type VulnCheck: https://github.com/unclecode/crawl4ai/security/advisories/GHSA-365w-hqf6-vxfg Types: Mitigation, Vendor Advisory Added Reference Type VulnCheck: https://www.vulncheck.com/advisories/crawl4ai-authentication-bypass-via-hardcoded-jwt-signing-key Types: Third Party Advisory Added Reference Type CISA-ADP: https://github.com/unclecode/crawl4ai/security/advisories/GHSA-365w-hqf6-vxfg Types: Mitigation, Vendor Advisory -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 22, 2026
Action Type Old Value New Value Added Reference https://github.com/unclecode/crawl4ai/security/advisories/GHSA-365w-hqf6-vxfg Added SSVC {'id': 'CVE-2026-56265', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'poc'}, {'automatable': 'yes'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-06-22T10:43:38.300741Z'} -
New CVE Received by [email protected]
Jun. 21, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'Crawl4AI', 'product': 'Crawl4AI', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '0.8.7', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '0.8.7', 'versionType': 'semver'}], 'packageURL': 'pkg:pypi/crawl4ai', 'defaultStatus': 'unaffected'}] 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. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Added CWE CWE-798 Added Reference https://github.com/unclecode/crawl4ai Added Reference https://github.com/unclecode/crawl4ai/security/advisories/GHSA-365w-hqf6-vxfg Added Reference https://www.vulncheck.com/advisories/crawl4ai-authentication-bypass-via-hardcoded-jwt-signing-key