CVE-2026-104056

critical · 9.8

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.

9.8

CVSS

0.2%

EPSS (exploit prob.)

10th

EPSS percentile

2026-10-01

Published

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

Weaknesses

CWE-345CWE-346CWE-829

References

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

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2026-104056