{"schema":"threatline.record/2","record":{"id":"CVE-2026-109425","aliases":[],"summary":"Tink-go 2.8.0 Keyset Validation Bypass via NewHandleWithNoSecrets","details":"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.","categories":["Unclassified"],"product":"tink-go","vendor":"tink-crypto","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-109425","source_modified_at":"2026-10-14T16:36:33.992Z","fetched_at":"2026-10-23T18:48:36.087640Z","product":"tink-go","vendor":"tink-crypto","versions":[{"status":"affected","version":"2.0.0","versionType":"semver","lessThanOrEqual":"2.8.0"}],"defaultStatus":"unaffected"}],"fixed_versions":[],"cvss":6.9,"severity":"Medium","kev":{"listed":false},"epss":{"probability":0.00193,"percentile":0.08473,"score_date":"2026-10-23"},"published_at":"2026-10-12T19:55:37.215Z","modified_at":"2026-10-14T16:36:33.992Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-109425","fetched_at":"2026-10-23T18:48:36.087640Z","source_modified_at":"2026-10-14T16:36:33.992Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-109425","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://github.com/tink-crypto/tink-go/issues/68","tags":["technical-description","exploit"]},{"source":"CVE List","url":"https://www.vulncheck.com/advisories/tink-go-keyset-validation-bypass-via-newhandlewithnosecrets","tags":["third-party-advisory"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"poc","automatable":"yes","technical_impact":"partial","assessed_at":"2026-10-13T15:03:37.680199Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-14T16:36:33.992Z","content_hash":"0565b10e65a2c8f10aa6ce875293a6dbd354bde17a01366311540b65d7c3f8a1"}}