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Open-source package vulnerability · PyPI

CVE-2026-56265: Crawl4AI: authentication bypass vulnerability due to a hardcoded default JWT signing key in the Docker API server

criticalCVSS 4.0 9.3 · 3.1 9.8GHSA-8qrg-7j2f-rf2h

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.

Published Jun 21, 2026 · Updated Sep 14, 2026

Affected packages

crawl4ai

Ecosystem
PyPI
Affected
< 0.8.7
Fixed in
0.8.7
Check
pip show crawl4ai

Advisory details

From the GitHub Advisory Database (CC BY 4.0).

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.

References

How this page is made: the data panel comes from the GitHub Advisory Database, CISA’s KEV catalog, the NVD and FIRST EPSS, and updates twice a day. No analysis has been written for this entry yet. Methodology

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