AZL-105224
See a problem?- Import Source
- https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-105224.json
- JSON Data
- https://api.osv.dev/v1/vulns/AZL-105224
- Upstream
- Published
- 2026-09-28T21:17:15Z
- Modified
- 2026-10-02T05:34:59Z
- Summary
- CVE-2026-102272 affecting package python-jwt 2.13.0-1
- Details
-
PyJWT is a Python implementation of JSON Web Token standards. From 2.13.0 until 2.14.0, HMACAlgorithm.prepare_key in jwt/algorithms.py is affected because raw-JWK detector does not normalize accepted Unicode byte-order marks before checking for JSON. This occurs when a public JWK is prefixed with a UTF-8 BOM and used in a mixed-algorithm verification path. As a result, public JWK bypasses asymmetric-key detection and becomes the HMAC secret. Consequently, an attacker who knows the public key can forge authenticated tokens. This issue is fixed in version 2.14.0.
- References