CVE-2026-89314: medium-severity vulnerability in Eclipse KeyPont - GOSE
Quadratic-time key_ops duplicate check lets a sub-1 MB JWKS body pin a CPU core for ~15 s
Published · Updated
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13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 6.9epss 0.3%
`jwkFields.CheckConsistency` detected duplicate `key_ops` entries with a pairwise nested loop, making validation cost grow with the **square** of the entry count. Because the check runs on every JWK and JWKS unmarshal, a modestly sized but hostile JWKS document could occupy a CPU core for many seconds.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
Affected products
Eclipse Foundation · Eclipse KeyPont - GOSERelated CVEs — Eclipse KeyPont - GOSE
In the same product, most dangerous first.
CVE-2026-89312MEDIUMAesGcmCryptor.Open passes attacker-controlled nonce to cipher.AEAD.Open without length check, causing panic on wrong-size IVEPSS 0.3%CVE-2026-89315MEDIUMJwtClaims.MarshalJSON panics via reflect.StructOf when any untyped claim key is not a valid Go identifier suffixEPSS 0.3%CVE-2026-89313MEDIUMJwksTrustStore.Get returns the last fetched JWKS key (err=nil) when the requested kid is absent, instead of nilEPSS 0.2%CVE-2026-89319MEDIUMJweDirectDecryptorBlock.Decrypt: unchecked _thales_aad length header reachable with forged tag → index-out-of-range / slice-bounds panic and unbounded allocationEPSS 0.2%CVE-2026-89316MEDIUMLoadPublicKey panics on kty/alg mismatch (kty=EC with a non-EC alg) via unchecked *ECDSAOptions type assertionEPSS 0.2%CVE-2026-89320HIGHHmacShaCryptor.Hash never hashes its input — returns constant HMAC_K("") for all inputs, voiding CBC-HMAC JWE integrityEPSS 0.2%