CVE-2026-102265: PyJWT: Uncaught RecursionError in jwt.decode() on deeply nested token header

Overview

Severity

Medium (CVSS 5.3)

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U

Exploit Status

Not Exploited

Patch Tuesday

2026-Sep

Released

2026-10-01

EPSS Score

0.29% (percentile: 19.5%)

Affected Products (1)

Other

• 0-17084

Revision History

• 2026-10-01: Information published.