CVE-2026-102267

PyJWT is a Python implementation of JSON Web Token standards. Prior to 2.14.0, PyJWT PyJWKClient is affected because redirect destinations are not revalidated against the JWKS trust boundary. This occurs when a configured trusted JWKS endpoint returns an attacker-influenced redirect. As a result, PyJWKClient follows the redirect and consumes the redirected response as key material. Consequently, forwarded credentials may be disclosed or verification keys may be substituted. This issue is fixed in version 2.14.0.

CVSS v3 7.4 HIGH

7.4^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.2 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/jpadilla/pyjwt/commit/0a795b8e1f6ef08f634aa7086fc41cc6d5ce3e56	Patch
https://github.com/jpadilla/pyjwt/releases/tag/2.14.0	Product Release Notes
https://github.com/jpadilla/pyjwt/security/advisories/GHSA-9v7f-9g4p-ffgj	Patch Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:pyjwt_project:pyjwt:*:*:*:*:*:*:*:*

History

07 Oct 2026, 20:27

Type	Values Removed	Values Added
References	~~() https://github.com/jpadilla/pyjwt/commit/0a795b8e1f6ef08f634aa7086fc41cc6d5ce3e56 -~~	() https://github.com/jpadilla/pyjwt/commit/0a795b8e1f6ef08f634aa7086fc41cc6d5ce3e56 - Patch
References	~~() https://github.com/jpadilla/pyjwt/releases/tag/2.14.0 -~~	() https://github.com/jpadilla/pyjwt/releases/tag/2.14.0 - Product, Release Notes
References	~~() https://github.com/jpadilla/pyjwt/security/advisories/GHSA-9v7f-9g4p-ffgj -~~	() https://github.com/jpadilla/pyjwt/security/advisories/GHSA-9v7f-9g4p-ffgj - Patch, Vendor Advisory
First Time		Pyjwt Project pyjwt Pyjwt Project
CPE		cpe:2.3:a:pyjwt_project:pyjwt::::::::

28 Sep 2026, 21:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-09-28 21:17

Updated : 2026-10-07 20:27

NVD link : CVE-2026-102267

Mitre link : CVE-2026-102267

CVE.ORG link : CVE-2026-102267

JSON object : View

Products Affected

pyjwt_project

pyjwt

CWE

CWE-200

Exposure of Sensitive Information to an Unauthorized Actor

CWE-345

Insufficient Verification of Data Authenticity

CWE-918

Server-Side Request Forgery (SSRF)

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