CVE-2026-96760

Critical9.8 Published on Sep 28, 2026

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.

CVSS score9.8 / 10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness type (CWE)CWE-20, CWE-347, CWE-358, CWE-670

Vulnerabilities

FortiMail and NetScaler Exploitation Drives an Urgent Enterprise Patch Cycle

FortiMail path traversal and NetScaler SAML flaw under active exploit join CISA KEV, forcing urgent patching plus PHP, PaperCut and Spectre fixes.

Oct 5, 202619:36 7 min readRead

This product uses the NVD API but is not endorsed or certified by the NVD.

CVE database

Related articles

FortiMail and NetScaler Exploitation Drives an Urgent Enterprise Patch Cycle