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CVE PROGRAM SOURCE RECORD8.8 High

CVE-2026-89320

HmacShaCryptor.Hash never hashes its input — returns constant HMAC_K("") for all inputs, voiding CBC-HMAC JWE integrity

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Status
Published
Published
Updated
Assigning organization
eclipse

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Eclipse Foundation Eclipse KeyPont - GOSE

Default version status: unaffected

  • 0.9.0 to ≤ 0.13.0-rc1affected

Eclipse Foundation Eclipse KeyPont - GOSE

Default version status: unaffected

  • 0 to < 1.0.0-rc1affected

References