CVE-2024-37568

lepture Authlib before 1.3.1 has algorithm confusion with asymmetric public keys. Unless an algorithm is specified in a jwt.decode call, HMAC verification is allowed with any asymmetric public key. (This is similar to CVE-2022-29217 and CVE-2024-33663.)

CVSS v3.1 NVD

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

CVSS v3.1 GitHub

7.4 HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

EPSS

0.38% chance of exploitation in the next 30 days, 31st percentile

Published

2024-06-09

Updated

2025-11-03

Proof-of-concept exploits (1)

• lepture/authlib/issues/6545434★ · 2026-10-15

Security advisories

• advisories/GHSA-5357-c2jx-v7qh

References

• CVE Record
• NVD entry