# CVE-2026-41425: python-authlib: Authlib is a Python library which builds OAuth and OpenID Connect servers

CVE-2026-41425 is fixed in 3 products on 1 platform, first by python3-authlib 1.3.0-1ubuntu0.1~esm2, released April 24, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-41425
- Priority: Routine
- CVSS: 5.4 (medium)
- EPSS: 0.0011
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Apr 24, 2026

## Description

Authlib is a Python library which builds OAuth and OpenID Connect servers. Prior to 1.6.11, there is no CSRF protection on the cache feature in authlib.integrations.starlette_client.OAuth.  This vulnerability is fixed in 1.6.11.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | python-Authlib sles 15.7 | 1.3.1-150600.3.22.1 | [SUSE-SU-2026:2968-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-2968-1.md) | Jul 14, 2026 |
| Linux | python-authlib Debian 12.15 (bookworm) | 1.2.0-1+deb12u2 | [DEBIAN-CVE-2026-41425](https://patchblox.com/security/data/fix/linux/debian-cve-2026-41425.md) | May 15, 2026 |
| Linux | python-authlib Debian 14 | 1.7.0-1 | [DEBIAN-CVE-2026-41425](https://patchblox.com/security/data/fix/linux/debian-cve-2026-41425.md) | May 15, 2026 |
| Linux | python3-authlib Ubuntu 24.04.5 LTS (noble) | 1.3.0-1ubuntu0.1~esm2 | [python3-authlib 1.3.0-1ubuntu0.1~esm2](https://patchblox.com/security/data/fix/linux/ubuntu-noble-python3-authlib-1.3.0-1ubuntu0.1-esm2.md) | Apr 24, 2026 |
| Linux | python3-authlib Ubuntu 26.04.1 LTS (resolute) | 1.6.7-1ubuntu0.1~esm1 | [python3-authlib 1.6.7-1ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-python3-authlib-1.6.7-1ubuntu0.1-esm1.md) | Apr 24, 2026 |

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Data as of 2026-11-09T01:18:40Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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