{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "4.0.0-rc.1"
              },
              {
                "fixed": "4.15.2"
              },
              {
                "introduced": "0"
              },
              {
                "fixed": "3.4.12"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "8f0b7ebf028187e84881694bb931cbe33604e308"
            },
            {
              "introduced": "0"
            },
            {
              "fixed": "c53d9774d4272d3cebeee4131012c20bd77b9dfb"
            },
            {
              "fixed": "c6b7e67548cfec209d7e22cd6256b04ca6b02995"
            }
          ],
          "repo": "https://github.com/zitadel/zitadel",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-g5h5-m4hm-xjrr"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-346"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55669.json"
  },
  "details": "ZITADEL is an open source identity management platform. Prior to 3.4.12 and 4.15.2, ZITADEL's external JWT Identity Provider validates a token's signature and issuer (iss) but not the audience (aud) claim, allowing a validly signed token from a trusted issuer for another relying party to be accepted by ZITADEL. This issue is fixed in versions 3.4.12 and 4.15.2.",
  "id": "CVE-2026-55669",
  "modified": "2026-07-12T03:54:50.483184074Z",
  "published": "2026-07-10T16:58:46.140Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/zitadel/zitadel/releases/tag/v3.4.12"
    },
    {
      "type": "WEB",
      "url": "https://github.com/zitadel/zitadel/releases/tag/v4.15.2"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55669.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/zitadel/zitadel/security/advisories/GHSA-g5h5-m4hm-xjrr"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-55669"
    }
  ],
  "schema_version": "1.7.5",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "ZITADEL: Missing Token Audience Validation (`aud`) in JWT IdP Provider"
}