CVE-2026-102271: PyJWT: Public keys in DER form are accepted as HMAC secrets, bypassing the CVE-2022-29217 guard

Overview

Severity

High (CVSS 7.4)

CVSS Vector

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

Exploit Status

Not Exploited

Patch Tuesday

2026-Sep

Released

2026-10-01

EPSS Score

0.18% (percentile: 6.2%)

Affected Products (1)

Other

• 0-17084

Revision History

• 2026-10-01: Information published.