{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "535cc3c2dcbd9c3dfd5e00a254ad4a984e5e7839"
            }
          ],
          "repo": "https://github.com/web-auth/webauthn-framework",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "b4cd9a4394c35fcac6080fd2f84f4f58a30abc01"
            }
          ],
          "repo": "https://github.com/web-auth/webauthn-framework",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-f7pm-6hr8-7ggm"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-346"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/30xxx/CVE-2026-30964.json"
  },
  "details": "web-auth/webauthn-lib is an open source set of PHP libraries and a Symfony bundle to allow developers to integrate that authentication mechanism into their web applications. Prior to 5.2.4, when allowed_origins is configured, CheckAllowedOrigins reduces URL-like values to their host component and accepts on host match alone. This makes exact origin policies impossible to express: scheme and port differences are silently ignored. This vulnerability is fixed in 5.2.4.",
  "id": "CVE-2026-30964",
  "modified": "2026-04-01T23:08:20.997300849Z",
  "published": "2026-03-10T17:16:46.895Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/30xxx/CVE-2026-30964.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/web-auth/webauthn-framework/security/advisories/GHSA-f7pm-6hr8-7ggm"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-30964"
    },
    {
      "type": "FIX",
      "url": "https://github.com/web-auth/webauthn-framework/commit/535cc3c2dcbd9c3dfd5e00a254ad4a984e5e7839"
    },
    {
      "type": "FIX",
      "url": "https://github.com/web-auth/webauthn-framework/commit/b4cd9a4394c35fcac6080fd2f84f4f58a30abc01"
    }
  ],
  "schema_version": "1.7.3",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Webauthn Framework: allowed_origins collapses URL-like origins to host-only values, bypassing exact origin validation"
}