Open Redirect Affecting pyjwt package, versions [,2.14.0)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-PYTHON-PYJWT-20250951
- published29 Sept 2026
- disclosed28 Sept 2026
- creditROHAN DAS
Introduced: 28 Sep 2026
NewCVE-2026-102267 (opens in a new tab)How to fix?
Upgrade PyJWT to version 2.14.0 or higher.
Overview
PyJWT is a Python implementation of RFC 7519.
Affected versions of this package are vulnerable to Open Redirect via the fetch_data method in jwt/jwks_client.py, which follows HTTP redirects when fetching a JWK Set from a remote URI. An attacker who can influence the JWKS endpoint URL or perform a MitM attack can redirect the request to an arbitrary server, causing the client to send its request headers (potentially including authorization or other sensitive headers) to an attacker-controlled host, and to accept a forged JWK Set that undermines signature verification.