GHSA-3V5C-RMM5-G74R

Vulnerability from github – Published: 2026-05-02 06:30 – Updated: 2026-05-02 06:30
VLAI?
Details

The Import and export users and customers plugin for WordPress is vulnerable to Privilege Escalation in all versions up to and including 2.0.8 via the save_extra_user_profile_fields() function. This is due to an incomplete blocklist that correctly restricts capability meta keys for the primary site (e.g., wp_capabilities, wp_user_level) but fails to block the equivalent meta keys for any other subsite in a WordPress Multisite network (e.g., wp_2_capabilities, wp_2_user_level), allowing these keys to pass the in_array() check and be written directly to user meta via update_user_meta(). This makes it possible for authenticated attackers, with Subscriber-level access and above, to escalate their privileges to Administrator on any subsite within the Multisite network by submitting a crafted profile update to /wp-admin/profile.php. Exploitation requires that an administrator has previously imported a CSV file containing multisite-prefixed capability column headers and has enabled the 'Show fields in profile?' option, which causes those keys to be stored in the acui_columns option and exposed as editable fields on the user profile page.

Severity ?
8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Show details on source website
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{
  "affected": [],
  "aliases": [
    "CVE-2026-7641"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-269"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-02T05:16:01Z",
    "severity": "HIGH"
  },
  "details": "The Import and export users and customers plugin for WordPress is vulnerable to Privilege Escalation in all versions up to and including 2.0.8 via the `save_extra_user_profile_fields()` function. This is due to an incomplete blocklist that correctly restricts capability meta keys for the primary site (e.g., `wp_capabilities`, `wp_user_level`) but fails to block the equivalent meta keys for any other subsite in a WordPress Multisite network (e.g., `wp_2_capabilities`, `wp_2_user_level`), allowing these keys to pass the `in_array()` check and be written directly to user meta via `update_user_meta()`. This makes it possible for authenticated attackers, with Subscriber-level access and above, to escalate their privileges to Administrator on any subsite within the Multisite network by submitting a crafted profile update to `/wp-admin/profile.php`. Exploitation requires that an administrator has previously imported a CSV file containing multisite-prefixed capability column headers and has enabled the \u0027Show fields in profile?\u0027 option, which causes those keys to be stored in the `acui_columns` option and exposed as editable fields on the user profile page.",
  "id": "GHSA-3v5c-rmm5-g74r",
  "modified": "2026-05-02T06:30:24Z",
  "published": "2026-05-02T06:30:24Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-7641"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/import-users-from-csv-with-meta/tags/2.0.6/classes/columns.php#L198"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/import-users-from-csv-with-meta/tags/2.0.6/classes/columns.php#L221"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/import-users-from-csv-with-meta/tags/2.0.6/classes/helper.php#L150"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/import-users-from-csv-with-meta/tags/2.0.6/classes/multisite.php#L21"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/import-users-from-csv-with-meta/tags/2.0.8/classes/columns.php#L198"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/import-users-from-csv-with-meta/tags/2.0.8/classes/columns.php#L221"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/import-users-from-csv-with-meta/tags/2.0.8/classes/helper.php#L150"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/import-users-from-csv-with-meta/tags/2.0.8/classes/multisite.php#L21"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/import-users-from-csv-with-meta/trunk/classes/columns.php#L198"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/import-users-from-csv-with-meta/trunk/classes/columns.php#L221"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/import-users-from-csv-with-meta/trunk/classes/helper.php#L150"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/import-users-from-csv-with-meta/trunk/classes/multisite.php#L21"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/changeset/3515646"
    },
    {
      "type": "WEB",
      "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/368cff00-6a86-443e-aec4-4115a229a3c1?source=cve"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}


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