CVE-2026-102275
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N
Summary
PyJWT is a Python implementation of JSON Web Token standards. From 2.1.0 until 2.15.0, PyJWT OKPAlgorithm.from_jwk in jwt/algorithms.py is affected because private-JWK import path does not compare the public key derived from d with x. This occurs when an OKP private JWK supplies non-corresponding x and d components. As a result, identity derived from x can differ from operations performed with d. Consequently, if an integration also accepts private key parameters from a proof header without rejecting them, an attacker may use a stolen sender-constrained token without the legitimate private key. This issue is fixed in version 2.15.0.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| jpadilla | pyjwt | >= 2.1.0, < 2.15.0 | affected |
Weaknesses
- CWE-345: CWE-345: Insufficient Verification of Data Authenticity
- CWE-348: CWE-348: Use of Less Trusted Source
References
- https://github.com/jpadilla/pyjwt/security/advisories/GHSA-x33g-cr3x-6449
- https://github.com/jpadilla/pyjwt/commit/3cd9ceec33ced359decbad75b413ad668ae6332c
- https://github.com/jpadilla/pyjwt/releases/tag/2.15.0
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