{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 5.7.0"
      },
      "package": {
        "ecosystem": "Packagist",
        "name": "auth0/symfony"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.0.0"
            },
            {
              "fixed": "5.8.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [],
  "database_specific": {
    "cwe_ids": [
      "CWE-331"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-04-03T03:44:13Z",
    "nvd_published_at": null,
    "severity": "HIGH"
  },
  "details": "### Impact\nIn applications built with the Auth0 PHP SDK, cookies are encrypted with insufficient entropy, which may result in threat actors brute-forcing the encryption key and forging session cookies.\n\n### Am I Affected?\nConsumers are affected if their application meets the following preconditions:\n- It uses the Auth0 Symfony SDK, versions between 5.0.0 and 5.7.0\n- Auth0 Symfony SDK using the Auth0-PHP SDK versions between 8.0.0 to 8.18.0.\n\n### Resolution\nUpgrade Auth0/symfony-auth0 to version 5.8.0 or greater.",
  "id": "GHSA-ghc5-95c2-vwcv",
  "modified": "2026-04-03T03:44:13Z",
  "published": "2026-04-03T03:44:13Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/auth0/symfony/security/advisories/GHSA-ghc5-95c2-vwcv"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/auth0/symfony"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Auth0 Symfony SDK has Insufficient Entropy in Cookie Encryption"
}