{"id":"CVE-2026-109425","revision":"98f874aee0a94466b8682989d14de7da","records":[{"revision":"98f874aee0a94466b8682989d14de7da","observedAt":"2026-10-27T03:22:55.977+00:00","statement":{"source":"cve-program","id":"CVE-2026-109425","aliases":[],"title":"Tink-go 2.8.0 Keyset Validation Bypass via NewHandleWithNoSecrets","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.","state":0,"publishedAt":"2026-10-12T19:55:37.215+00:00","modifiedAt":"2026-10-27T01:30:42.123+00:00","affected":[{"ecosystem":"Vendor product","name":"tink-go","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"defaultStatus\": \"unaffected\",\n                    \"vendor\": \"tink-crypto\",\n                    \"product\": \"tink-go\",\n                    \"packageURL\": \"pkg:github/tink-crypto/tink-go\",\n                    \"repo\": \"https://github.com/tink-crypto/tink-go\",\n                    \"versions\": [\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"2.0.0\",\n                            \"versionType\": \"semver\",\n                            \"lessThanOrEqual\": \"2.8.0\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","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,"severity":"MEDIUM"},{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","score":5.3,"severity":"MEDIUM"}],"references":["https://github.com/tink-crypto/tink-go/issues/68","https://www.vulncheck.com/advisories/tink-go-keyset-validation-bypass-via-newhandlewithnosecrets"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-109425","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-109425","identifiers":["CVE-2026-109425"]},"retained":false,"historicalAffected":[]}],"coverage":[]}