{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "2.0.0"
              },
              {
                "last_affected": "2.8.0"
              },
              {
                "introduced": "0"
              },
              {
                "fixed": "2.8.0"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "DESCRIPTION"
            ]
          },
          "events": [
            {
              "introduced": "e4efe8dadfb70cc4bad49c2f5a774e6783e0a251"
            },
            {
              "fixed": "ea8714348155f8b04002b633a790f41d58539672"
            }
          ],
          "repo": "https://github.com/tink-crypto/tink-go",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
      "CWE-1286"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/109xxx/CVE-2026-109425.json"
  },
  "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.",
  "id": "CVE-2026-109425",
  "modified": "2026-10-15T02:31:05.270095510Z",
  "published": "2026-10-12T19:55:37.215Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/109xxx/CVE-2026-109425.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-109425"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.vulncheck.com/advisories/tink-go-keyset-validation-bypass-via-newhandlewithnosecrets"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/tink-crypto/tink-go"
    },
    {
      "type": "EVIDENCE",
      "url": "https://github.com/tink-crypto/tink-go/issues/68"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "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",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Tink-go 2.8.0 Keyset Validation Bypass via NewHandleWithNoSecrets"
}