{"id":"CVE-2026-109425","published":"2026-10-12T20:17:09.293","lastModified":"2026-10-16T18:14:51.460","description":"Tink-go (tink-crypto/tink-go) through 2.8.0 contains an input-validation vulnerability where keyset.NewHandleWithNoSecrets() and ReadWithNoSecrets() skip the structural Validate() step before constructing a keyset.Handle, allowing malformed public or no-secret keysets that violate Tink's keyset invariants to be accepted. Attackers can supply a malformed keyset, such as one with an enabled public key lacking a valid primary key or a DESTROYED key with no KeyData, causing inconsistent downstream validation where functions like jwt.JWKSetFromPublicKeysetHandle() process the invalid handle and produce a JWK set, potentially misleading applications that rely on successful handle construction as proof of keyset integrity.","cvssScore":5.3,"cvssSeverity":"MEDIUM","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","cwes":["CWE-1286"],"vendors":[],"products":[],"references":[{"url":"https://github.com/tink-crypto/tink-go/issues/68","tags":[]},{"url":"https://www.vulncheck.com/advisories/tink-go-keyset-validation-bypass-via-newhandlewithnosecrets","tags":[]}],"exploitRefs":[{"url":"https://github.com/tink-crypto/tink-go/issues/68","tags":[]}],"hasPoc":true,"ai":null}