CVE-2026-85394 python-jose through 3.5.0 fails to properly validate… — CVE Notify — TG.ME

CVCVE Notify@cveNotify · 19.7K subscribersOpen in TelegramOpen

🚨 CVE-2026-85394
python-jose through 3.5.0 fails to properly validate asymmetric keys in HMAC initialization, accepting DER-encoded public keys that lack PEM armor or SSH prefixes. Attackers holding the service's public key can forge HS256 tokens that pass verification when algorithms are not explicitly restricted. This is an incomplete fix for CVE-2024-33663.

🎖@cveNotify

GitHub

CVE-2024-33663 - GitHub Advisory Database

python-jose algorithm confusion with OpenSSH ECDSA keys

t.me/cveNotify/284687

September 3, 2026 36 1