# CVE-2026-44681: python-authlib: Authlib is a Python library which builds OAuth and OpenID Connect servers

CVE-2026-44681 is fixed in 2 products on 1 platform, first by DEBIAN-CVE-2026-44681, released June 24, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-44681
- Priority: Routine
- CVSS: 6.1 (medium)
- EPSS: 0.0025
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: May 27, 2026

## Description

Authlib is a Python library which builds OAuth and OpenID Connect servers. Prior to 1.6.12 and 1.7.1, an unauthenticated open redirect in Authlib's OpenIDImplicitGrant and OpenIDHybridGrant authorization endpoint lets a remote attacker cause the authorization server to issue an HTTP 302 to an attacker-chosen URL by submitting an authorization request that omits the openid scope. This vulnerability is fixed in 1.6.12 and 1.7.1.

## 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-2026-44681](https://patchblox.com/security/data/fix/linux/debian-cve-2026-44681.md) | Jun 24, 2026 |
| Linux | python-authlib Debian 14 | 1.7.2-1 | [DEBIAN-CVE-2026-44681](https://patchblox.com/security/data/fix/linux/debian-cve-2026-44681.md) | Jun 24, 2026 |

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Data as of 2026-11-09T07:25:28Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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