CVE-2025-68158

python3-authlib: Authlib is a Python library which builds OAuth and OpenID Connect servers

CVE-2025-68158 is fixed in 3 products on 1 platform, first by python3-authlib 1.3.0-1ubuntu0.1~esm1, released January 8, 2026. It is not reported as exploited. Patch Radar priority: High.

High
CVSS
8.8
Medium
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0027
19th percentile

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.

Where it's fixed

ProductFixed inFixReleased
Linux
python-Authlib · opensuse-leap 15.6 1.3.1-150600.3.14.1 SUSE-SU-2026:0828-1 Mar 5, 2026
python-Authlib · opensuse-leap 16.0 1.5.2-bp160.2.1 OPENSUSE-SU-2026:20257-1 Feb 19, 2026
python-Authlib · sles 15.7 1.3.1-150600.3.14.1 SUSE-SU-2026:0828-1 Mar 5, 2026
python-authlib · Debian 12.15 (bookworm) 1.2.0-1+deb12u1 DEBIAN-CVE-2025-68158 Jan 8, 2026
python-authlib · Debian 13.5 (trixie) 1.6.0-1+deb13u1 DEBIAN-CVE-2025-68158 Jan 8, 2026
python-authlib · Debian 14 1.6.6-1 DEBIAN-CVE-2025-68158 Jan 8, 2026
python3-authlib · Ubuntu 24.04.5 LTS (noble) 1.3.0-1ubuntu0.1~esm1 python3-authlib 1.3.0-1ubuntu0.1~esm1 Jan 8, 2026

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