P4Verified

python-jose algorithm confusion guard bypassed by DER-encoded public keys

CVE-2026-85394 affects python-jose. CVSS base score 9.1 (GitHub Advisory Database). EPSS 0.00354 (percentile 0.26754), scored 2026-10-04. Affected range: <= 3.5.0.

Affected technology

python-jose · <= 3.5.0
Vendor not specified by the source

Description’s affected range: through 3.5.0 fails to properly validate asymmetric keys in HMAC initialization

Component: Not specified by the source

Attack conditions (GitHub Advisory Database, CVSS 3.1): Network (remote) · No privileges required · No user interaction required

What an attacker can do

GitHub Advisory Database’s CVSS 3.1 assessment rates confidentiality and integrity impact as high; availability impact as none. The description does not specify what an attacker can achieve beyond these rated impacts.

Published 2026-10-05 23:14:25.116585+00:00

CVE: CVE-2026-85394
Product: python-jose
CCR priority: 36.5 /100 (P4)
CVSS: 9.1 /10 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N · GitHub Advisory Database
EPSS: 0.00354 · percentile 0.26754 · 2026-10-04
KEV: no

Provenance

GitHub Advisory Database · Source record · observed 2026-10-05 23:10:51.172112+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2026-85394.html