CVE-2026-102275
Publication date 28 September 2026
Last updated 27 October 2026
Ubuntu priority
Description
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.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| pyjwt | 26.10 stonking |
Fixed in 2.13.0-1ubuntu1.1
|
| 26.04 LTS resolute |
Fixed in 2.10.1-4ubuntu1.3
|
|
| 24.04 LTS noble |
Fixed in 2.7.0-1ubuntu0.4
|
|
| 22.04 LTS jammy |
Fixed in 2.3.0-1ubuntu0.6
|
|
| 20.04 LTS focal |
Not affected
|
|
| 18.04 LTS bionic |
Not affected
|
|
| 16.04 LTS xenial |
Not affected
|
Severity score breakdown
CVSS version: CVSS v3.0
Base score
6.5 · Medium
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N
References
Related Ubuntu Security Notices (USN)
- USN-8934-1
- PyJWT vulnerabilities
- 19 October 2026