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PyJWT: Non-canonical signature segments enable raw-token revocation bypass

CVE-2026-102269 affects azl3 python-jwt 2.13.0-1 on Azure Linux 3.0. CVSS base score 4.8 (Microsoft Security Response Center). EPSS 0.00198 (percentile 0.08698), scored 2026-10-03. Fixed version: 2.14.0-1. Fixed version: 1.179.0-r0.

Published 2026-10-05 08:15:50.194749+00:00

CVE

CVE-2026-102269

Product

azl3 python-jwt 2.13.0-1 on Azure Linux 3.0

CCR priority

19.2 /100 (P5)

CVSS

4.8 /10 · CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N · Microsoft Security Response Center

EPSS

0.00198 · percentile 0.08679 · 2026-10-04

KEV

no

Affected products

• azl3 python-jwt 2.13.0-1 on Azure Linux 3.0
• pyjwt · Fixed version: 2.14.0-1
• semgrep · Fixed version: 1.179.0-r0

Provenance

• Microsoft MSRC Security Update Guide (CVRF) · Source record · observed 2026-10-04 07:08:49.022374+00:00 UTC
• OSV.dev · Source record · observed 2026-10-04 23:49:35.786600+00:00 UTC
• OSV.dev · Source record · observed 2026-10-04 23:49:35.786600+00:00 UTC
• FIRST EPSS daily exploit-probability · Source record · observed 2026-10-05 08:16:32.814186+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2026-102269.html