{"id":"CVE-2024-37568","details":"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.)","aliases":["GHSA-5357-c2jx-v7qh","PYSEC-2024-52"],"modified":"2026-04-16T04:31:51.695773177Z","published":"2024-06-09T19:15:52.323Z","related":["SUSE-SU-2024:2064-1","openSUSE-SU-2024:14035-1"],"references":[{"type":"WEB","url":"https://www.vicarius.io/vsociety/posts/algorithm-confusion-in-lepture-authlib-cve-2024-37568"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2025/10/msg00032.html"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FHJI32SN4FNAUVNALVGOKWHNSQ6XS3M5/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IZI7HYGN7VZAYFV6UV3SRLYF7QGERXIU/"},{"type":"REPORT","url":"https://github.com/lepture/authlib/issues/654"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/lepture/authlib","events":[{"introduced":"0"},{"fixed":"df226ab587c453029ef5083a7e1c5dc6772647dd"}],"database_specific":{"versions":[{"introduced":"0"},{"fixed":"1.3.1"}]}}],"versions":["v0.1","v0.10","v0.11","v0.12","v0.13","v0.14","v0.14.1","v0.14.2","v0.14.3","v0.15","v0.2","v0.2.1","v0.3","v0.4","v0.4.1","v0.5","v0.5.1","v0.6","v0.7","v0.8","v0.9","v1.0.0","v1.0.1","v1.1.0","v1.2.0","v1.2.1","v1.3.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-37568.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"}]}