Origin Validation Error Affecting python3-jwt+crypto package, versions <0:2.4.0-1.amzn2023.0.6


Severity

Recommended
0.0
high
0
10

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.16% (5th percentile)

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  • Snyk IDSNYK-AMZN2023-PYTHON3JWTCRYPTO-21703991
  • published25 Oct 2026
  • disclosed28 Sept 2026

Introduced: 28 Sep 2026

CVE-2026-102267  (opens in a new tab)
CWE-346  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 python3-jwt+crypto to version 0:2.4.0-1.amzn2023.0.6 or higher.
This issue was patched in ALAS2023-2026-3298.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python3-jwt+crypto package and not the python3-jwt+crypto package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2023 relevant fixed versions and status.

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 Base Scores

version 3.1