CVE-2024-37568

HIGH EPSS 30.0%
Published Jun 9, 20242y ago · Modified Jun 17, 20261w ago
7.5 CVSS 3.1
High
Find Similar
Published Jun 9, 2024 2y ago
Last Modified Jun 17, 2026 1w ago

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 Details

Base Score
7.5
Exploitability
3.9
Impact
3.6
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality None
Integrity High
Availability None

Threat Intelligence

EPSS Exploit Probability
30.0% percentile
Exploit & Patch Status
Public Exploit Known
No Patch Available

Weaknesses 2

CWE-284
CWE-347

Affected Products 1

VendorProductVersionRange
authlibauthlib* <1.3.1

References 5

  • github.com https://github.com/lepture/authlib/issues/654
    ExploitIssue Tracking
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2025/10/msg00032.html
  • lists.fedoraproject.org https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FHJI32SN4FNAUVNALVGOKWHNSQ6XS3M5/
  • lists.fedoraproject.org https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IZI7HYGN7VZAYFV6UV3SRLYF7QGERXIU/
  • vicarius.io https://www.vicarius.io/vsociety/posts/algorithm-confusion-in-lepture-authlib-cve-2024-37568

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.