CVE-2025-68158
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 3.1
- 8.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - EPSS
- 0.3% chance of exploitation in the next 30 days; higher than 19% of CVEs (scores of 2026-10-25)
- CWE
- CWE-352
- Published
- Modified
- Record from
- the NVD, synced
Affected
- authlib:authlib
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-fg6f-75jq-6523 | PyPI | authlib | >=1.0.0 <1.6.6 | 1.6.6 |
| PYSEC-2026-1201 | PyPI | authlib | >=1.0.0 <1.6.6 | 1.6.6 |
References
- https://github.com/authlib/authlib/commit/2808378611dd6fb2532b189a9087877d8f0c0489
- https://github.com/authlib/authlib/commit/7974f45e4d7492ab5f527577677f2770ce423228
- https://github.com/authlib/authlib/security/advisories/GHSA-fg6f-75jq-6523
- https://github.com/authlib/authlib/security/advisories/GHSA-fg6f-75jq-6523