Vulnerability 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.)
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Authlib | Authlib | < 1.3.1 |
Related Weaknesses (CWE)
References
- https://github.com/lepture/authlib/issues/654ExploitIssue Tracking
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://www.vicarius.io/vsociety/posts/algorithm-confusion-in-lepture-authlib-cv
- https://github.com/lepture/authlib/issues/654ExploitIssue Tracking
- https://lists.debian.org/debian-lts-announce/2025/10/msg00032.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://www.vicarius.io/vsociety/posts/algorithm-confusion-in-lepture-authlib-cv
FAQ
What is CVE-2024-37568?
CVE-2024-37568 is a vulnerability with a CVSS score of 7.5 (HIGH). 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. (T...
How severe is CVE-2024-37568?
CVE-2024-37568 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2024-37568?
Check the references section above for vendor advisories and patch information. Affected products include: Authlib Authlib.