PYSEC-2024-52

At a glance

Published: 2024-06-09
Updated: 2026-06-10
CVE: CVE-2024-37568
Aliases: GHSA-5357-c2jx-v7qh

Description

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.)

Affected packages

Package	Versions
PyPI · authlib	introduced 0, fixed 1.3.1

References

https://github.com/lepture/authlib/issues/654 REPORT
https://github.com/advisories/GHSA-5357-c2jx-v7qh ADVISORY

Sources

Source	Licence
OSV.dev	CC-BY 4.0 — PyPA Advisory Database