GHSA-W3WC-44P4-M4J7

Vulnerability from github – Published: 2026-04-01 20:29 – Updated: 2026-04-01 20:29
VLAI?
Summary
Auth0 PHP SDK has Insufficient Entropy in Cookie Encryption
Details

Impact

In 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.

Am I Affected?

Consumers are affected if their application meets the following preconditions: - Their application is using the Auth0-PHP SDK, versions between 8.0.0 and 8.18.0 - Their application is using the Auth0-PHP SDK, or the following SDKs that rely on the Auth0-PHP SDK: - Auth0/symfony, - Auth0/laravel0-auth0, or - Auth0/wordpress

Resolution

Upgrade Auth0/Auth0-PHP to version 8.19.0 or greater.

Severity ?
8.2 (High)
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N
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{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 8.18.0"
      },
      "package": {
        "ecosystem": "Packagist",
        "name": "auth0/auth0-php"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "8.0.0"
            },
            {
              "fixed": "8.19.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-34236"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-331"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-04-01T20:29:26Z",
    "nvd_published_at": "2026-04-01T18:16:30Z",
    "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- Their application is using the Auth0-PHP SDK, versions between 8.0.0 and 8.18.0\n- Their application is using the Auth0-PHP SDK, or the following SDKs that rely on the Auth0-PHP SDK:\n    - Auth0/symfony,\n    - Auth0/laravel0-auth0, or\n    - Auth0/wordpress\n\n### Resolution\nUpgrade Auth0/Auth0-PHP to version 8.19.0 or greater.",
  "id": "GHSA-w3wc-44p4-m4j7",
  "modified": "2026-04-01T20:29:43Z",
  "published": "2026-04-01T20:29:26Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/auth0/auth0-PHP/security/advisories/GHSA-w3wc-44p4-m4j7"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-34236"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/auth0/auth0-PHP"
    },
    {
      "type": "WEB",
      "url": "https://github.com/auth0/auth0-PHP/releases/tag/8.19.0"
    }
  ],
  "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 PHP SDK has Insufficient Entropy in Cookie Encryption"
}


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