GHSA-4V98-7R2C-MXG7

Vulnerability from github – Published: 2026-05-01 12:30 – Updated: 2026-05-01 12:30
VLAI
Details

The Temporary Login plugin for WordPress is vulnerable to Authentication Bypass in versions up to and including 1.0.0. This is due to improper input validation in the maybe_login_temporary_user() function, which fails to verify that the 'temp-login-token' GET parameter is a scalar string before processing it. When the parameter is supplied as an array, PHP's empty() check is bypassed and sanitize_key() returns an empty string, which is then passed as the meta_value to get_users(). WordPress ignores an empty meta_value and returns all users matching the meta_key '_temporary_login_token', allowing authentication without a valid token. This makes it possible for unauthenticated attackers to authenticate as any active temporary login user by sending a single crafted GET request.

Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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{
  "affected": [],
  "aliases": [
    "CVE-2026-7567"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-288"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-01T10:15:58Z",
    "severity": "CRITICAL"
  },
  "details": "The Temporary Login plugin for WordPress is vulnerable to Authentication Bypass in versions up to and including 1.0.0. This is due to improper input validation in the maybe_login_temporary_user() function, which fails to verify that the \u0027temp-login-token\u0027 GET parameter is a scalar string before processing it. When the parameter is supplied as an array, PHP\u0027s empty() check is bypassed and sanitize_key() returns an empty string, which is then passed as the meta_value to get_users(). WordPress ignores an empty meta_value and returns all users matching the meta_key \u0027_temporary_login_token\u0027, allowing authentication without a valid token. This makes it possible for unauthenticated attackers to authenticate as any active temporary login user by sending a single crafted GET request.",
  "id": "GHSA-4v98-7r2c-mxg7",
  "modified": "2026-05-01T12:30:24Z",
  "published": "2026-05-01T12:30:24Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-7567"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/temporary-login/tags/1.0.0/core/admin.php#L135"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/temporary-login/tags/1.0.0/core/admin.php#L179"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/temporary-login/tags/1.0.0/core/options.php#L157"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/temporary-login/trunk/core/admin.php#L135"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/temporary-login/trunk/core/admin.php#L179"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/temporary-login/trunk/core/options.php#L157"
    },
    {
      "type": "WEB",
      "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/f97c669b-86c1-4873-a050-76972f494099?source=cve"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}


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