CVE-2024-53861
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2024-53861
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2024-53861.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2024-53861
- Aliases
- Related
- Published
- 2024-11-29T19:15:09Z
- Modified
- 2025-01-08T16:21:50.141808Z
- Downstream
- Summary
- [none]
- Details
-
pyjwt is a JSON Web Token implementation in Python. An incorrect string comparison is run for
isschecking, resulting in"acb"being accepted for"_abc_". This is a bug introduced in version 2.10.0: checking the "iss" claim changed fromisinstance(issuer, list)toisinstance(issuer, Sequence). Since str is a Sequnce, but not a list,inis also used for string comparison. This results inif "abc" not in "__abcd__":being checked instead ofif "abc" != "__abc__":. Signature checks are still present so real world impact is likely limited to denial of service scenarios. This issue has been patched in version 2.10.1. All users are advised to upgrade. There are no known workarounds for this vulnerability. - References
-
- https://github.com/jpadilla/pyjwt/security/advisories/GHSA-75c5-xw7c-p5pm
- https://github.com/jpadilla/pyjwt/commit/1570e708672aa9036bc772476beae8bfa48f4131#diff-6893ad4a1c5a36b8af3028db8c8bc3b62418149843fc382faf901eaab008e380R366
- https://github.com/jpadilla/pyjwt/commit/33022c25525c1020869c71ce2a4109e44ae4ced1