Vulnerability Description
Authlib is a Python library which builds OAuth and OpenID Connect servers. In versions 1.0.0 through 1.6.5, cache-backed state/request-token storage is not tied to the initiating user session, so CSRF is possible for any attacker that has a valid state (easily obtainable via an attacker-initiated authentication flow). When a cache is supplied to the OAuth client registry, FrameworkIntegration.set_state_data writes the entire state blob under _state_{app}_{state}, and get_state_data ignores the caller’s session altogether. This issue has been patched in version 1.6.6.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Authlib | Authlib | < 1.6.6 |
Related Weaknesses (CWE)
References
- https://github.com/authlib/authlib/commit/2808378611dd6fb2532b189a9087877d8f0c04Patch
- https://github.com/authlib/authlib/commit/7974f45e4d7492ab5f527577677f2770ce4232Patch
- https://github.com/authlib/authlib/security/advisories/GHSA-fg6f-75jq-6523ExploitVendor Advisory
- https://github.com/authlib/authlib/security/advisories/GHSA-fg6f-75jq-6523ExploitVendor Advisory
FAQ
What is CVE-2025-68158?
CVE-2025-68158 is a vulnerability with a CVSS score of 5.7 (MEDIUM). Authlib is a Python library which builds OAuth and OpenID Connect servers. In versions 1.0.0 through 1.6.5, cache-backed state/request-token storage is not tied to the initiating user session, so CSRF...
How severe is CVE-2025-68158?
CVE-2025-68158 has been rated MEDIUM with a CVSS base score of 5.7/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-68158?
Check the references section above for vendor advisories and patch information. Affected products include: Authlib Authlib.