CVE-2026-104056

CRITICALCVSS 9.8

Description

Authlib version 1.7.2 and below contains a vulnerability where discovery JSON metadata is cached without validation or issuer-origin binding. This allows a poisoned discovery response to replace all endpoint values with attacker-controlled values rather than endpoint URLs that share the origin of the configured server metadata URL.

Timeline

Published:October 1st, 2026 7:17 PM

Last modified:October 5th, 2026 7:17 PM

CVSS Scoring

CVSS v3: 9.8 (CRITICAL)

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

Weaknesses (CWE)

CWE-345 CWE-346 CWE-829

References & Reports

Advisories, patches, and third-party reports

https://uziii2208.github.io/post/cve-2026-104056/
https://uziii2208.github.io/post/cve-2026-104056/

Source: NIST NVD · Data may lag official sources by up to one minute