GitHub Advisoryadvisory · PyPI

GHSA-5357-c2jx-v7qh Authlib has algorithm confusion with asymmetric public keys

HIGH Published 2024-06-09 Modified 2025-11-03 Official page ↗
Aliases
CVE-2024-37568
Ecosystem
PyPI
Packages
authlib
Severity
High
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Weaknesses
CWE-284, CWE-327, CWE-347
Reviewed
2024-06-10

Affected packages

• PyPI authlib: < 1.3.1 → fixed in 1.3.1

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.)

Related

Alias · CVE (1)

  • CVE-2024-37568 lepture Authlib before 1.3.1 has algorithm confusion with asymmetric public keys. vulnerability

Weakness · CWE (3)

  • CWE-284 Improper Access Control weakness
  • CWE-327 Use of a Broken or Risky Cryptographic Algorithm weakness
  • CWE-347 Improper Verification of Cryptographic Signature weakness

References