Information Exposure Affecting pyjwt package, versions <2.15.1-1


Severity

Recommended
0.0
critical
0
10

Snyk's Security Team recommends NVD's CVSS assessment. Learn more

Threat Intelligence

EPSS
0.16% (5th percentile)

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  • Snyk IDSNYK-ECHOLATEST-PYJWT-20257527
  • published29 Sept 2026
  • disclosed28 Sept 2026

Introduced: 28 Sep 2026

NewCVE-2026-102267  (opens in a new tab)
CWE-200  (opens in a new tab)
CWE-345  (opens in a new tab)
CWE-918  (opens in a new tab)

How to fix?

Upgrade Echo:latest pyjwt to version 2.15.1-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream pyjwt package and not the pyjwt package as distributed by Echo. See How to fix? for Echo:latest 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