# CVE-2026-96760: python-authlib: Authlib (v1.7.2 and below) contains a signature verification bypass vulnerability

CVE-2026-96760 is fixed in python-authlib on 1 platform by DEBIAN-CVE-2026-96760 (version 1.9.1-1), released September 28, 2026. It is not reported as exploited. Patch Radar priority: Urgent.

- Web page: https://patchblox.com/security/cve/CVE-2026-96760
- Priority: Urgent
- CVSS: 9.8 (critical)
- EPSS: 0.0043
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Sep 28, 2026

## Description

Authlib (v1.7.2 and below) contains a signature verification bypass vulnerability. The JsonWebSignature.deserialize_json() method accepts a JSON Serialization JWS object and returns the payload as successfully verified without checking for a signature and without requiring a cryptographic key.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | python-authlib Debian 14 | 1.9.1-1 | [DEBIAN-CVE-2026-96760](https://patchblox.com/security/data/fix/linux/debian-cve-2026-96760.md) | Sep 28, 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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