# 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.

- Web page: https://patchblox.com/security/cve/CVE-2025-68158
- Priority: High
- CVSS: 8.8 (Medium)
- EPSS: 0.0027
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jan 8, 2026

## 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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | python-Authlib opensuse-leap 15.6 | 1.3.1-150600.3.14.1 | [SUSE-SU-2026:0828-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0828-1.md) | Mar 5, 2026 |
| Linux | python-Authlib opensuse-leap 16.0 | 1.5.2-bp160.2.1 | [OPENSUSE-SU-2026:20257-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-20257-1.md) | Feb 19, 2026 |
| Linux | python-Authlib sles 15.7 | 1.3.1-150600.3.14.1 | [SUSE-SU-2026:0828-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0828-1.md) | Mar 5, 2026 |
| Linux | python-authlib Debian 12.15 (bookworm) | 1.2.0-1+deb12u1 | [DEBIAN-CVE-2025-68158](https://patchblox.com/security/data/fix/linux/debian-cve-2025-68158.md) | Jan 8, 2026 |
| Linux | python-authlib Debian 13.5 (trixie) | 1.6.0-1+deb13u1 | [DEBIAN-CVE-2025-68158](https://patchblox.com/security/data/fix/linux/debian-cve-2025-68158.md) | Jan 8, 2026 |
| Linux | python-authlib Debian 14 | 1.6.6-1 | [DEBIAN-CVE-2025-68158](https://patchblox.com/security/data/fix/linux/debian-cve-2025-68158.md) | Jan 8, 2026 |
| Linux | python3-authlib Ubuntu 24.04.5 LTS (noble) | 1.3.0-1ubuntu0.1~esm1 | [python3-authlib 1.3.0-1ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-python3-authlib-1.3.0-1ubuntu0.1-esm1.md) | Jan 8, 2026 |

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Data as of 2026-11-08T19:12:23Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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