CVE-2026-89320
`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.
- Score
- CVSS 4.0 8.8 High
- Status
- Deferred - emo@eclipse.org
- Published
- 2026-10-23
- Last modified
- 2026-10-23
- Weaknesses
- CWE-354
Affected products
References
- https://github.com/eclipse-keypont/gose/security/advisories/GHSA-h6w5-722x-2h3m
