[ CVE-2026-89320 · Published 23 Oct 2026 ]
Vulnerability in Eclipse Foundation Eclipse KeyPont - GOSE
CVSS 8.8
EPSS <1%No fix listed yet
[ Description ]Official description
`HmacShaCryptor.Hash` never hashed its input. For any input it returned `HMAC_K("")` — the MAC of the empty message under the key. Every AES-CBC-HMAC JWE produced or verified by gose therefore carried an authentication tag that is constant per key and independent of the message, removing ciphertext integrity entirely.
[ Fixes ]Fixes and patches
No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.