Uncaught Exception Affecting semgrep package, versions <1.178.0-r11


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.29% (20th percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk IDSNYK-CHAINGUARDLATEST-SEMGREP-20476359
  • published4 Oct 2026
  • disclosed28 Sept 2026

Introduced: 28 Sep 2026

NewCVE-2026-101918  (opens in a new tab)
CWE-248  (opens in a new tab)

How to fix?

Upgrade Chainguard semgrep to version 1.178.0-r11 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream semgrep package and not the semgrep package as distributed by Chainguard. See How to fix? for Chainguard relevant fixed versions and status.

PyJWT is a Python implementation of JSON Web Token standards. From 2.0.0a1 until 2.15.0, PyJWT PyJWKClient.get_signing_key_from_jwt is affected because payload parser catches ValueError but not RecursionError. This occurs when an attacker-controlled recursively nested payload reaches json.loads. As a result, documented PyJWT exception handling does not contain the failure. Consequently, an unauthenticated request can raise an exception that may produce an HTTP 500 response. The advisory-defined affected implementation also includes jwt/api_jwt.py, verify_signature=False. This issue is fixed in version 2.15.0.

CVSS Base Scores

version 3.1