CVE-2026-89320
CVE-2026-89320 · HmacShaCryptor.Hash never hashes its input — returns constant HMAC_K("") for all inputs, voiding CBC-HMAC JWE integrity
This page contains facts from public vulnerability sources. Check the original advisory before updating.
`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.
CVSS 8.8 · High · EPSS 0.2% · Fix available
- Published
- Updated
Affected products and versions
eclipse keypont - gose
- Versions
- ≥ 0.9.0, ≤ 0.13.0-rc1: Affected (semver)
No fix published
eclipse keypont - gose
- Versions
- ≥ 0, < 1.0.0-rc1: Affected (semver)
Update to 1.0.0-rc1