{"id":"CVE-2026-109425","aliases":[],"title":"Tink-go 2.8.0 Keyset Validation Bypass via NewHandleWithNoSecrets","titleSource":"VulnCheck","descriptionSource":"VulnCheck","products":[{"vendor":"tink-crypto","name":"tink-go","platforms":[],"versions":[{"version":"2.0.0","status":"affected","lessThanOrEqual":"2.8.0","versionType":"semver"}],"defaultStatus":"unaffected","source":"VulnCheck","url":"https://www.cve.org/CVERecord?id=CVE-2026-109425"}],"remediation":[],"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.","severity":"medium","score":6.9,"published":"2026-10-12T19:55:37.215Z","modified":"2026-10-27T01:30:42.123Z","withdrawn":false,"knownExploited":false,"affected":[],"references":["https://github.com/tink-crypto/tink-go/issues/68","https://www.vulncheck.com/advisories/tink-go-keyset-validation-bypass-via-newhandlewithnosecrets"],"sources":[{"name":"CVE","id":"CVE-2026-109425","modified":"2026-10-27T01:30:42.123Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-109425"}],"assessments":[{"source":"VulnCheck","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N","score":6.9},{"source":"VulnCheck","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","score":5.3}],"sourceAffected":[],"kev":{"status":"not-listed","checkedAt":"2026-10-28T19:15:31.108Z"},"coverage":[{"source":"NVD","status":"not-checked"},{"source":"GHSA","status":"not-checked"},{"source":"EUVD","status":"not-checked"},{"source":"EPSS","status":"not-checked"}],"evidence":[]}