CVE-2026-75977 (GCVE-0-2026-75977)

Vulnerability from cvelistv5 – Published: 2026-08-26 07:42 – Updated: 2026-08-26 07:42
VLAI
Title
Mang Board WP <= 2.3.7 - Authenticated (Subscriber+) Privilege Escalation to Forged Authentication Cookie
Summary
The Mang Board WP plugin for WordPress is vulnerable to Missing Authorization via Authentication Cookie Forgery in all versions up to, and including, 2.3.7. This is due to flawed HMAC generation in the mbw_get_hash_key() function that uses the current user's identity instead of the cookie username parameter when a WordPress user is logged in, combined with insufficient validation in mbw_validate_auth_cookie(). This makes it possible for authenticated attackers, with subscriber-level access and above, to forge administrator authentication cookies and change administrator passwords to achieve complete site takeover.
Severity
8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
  • CWE-269 - Improper Privilege Management
Assigner
References
Impacted products
Vendor Product Version CPE status
kitae-park Mang Board WP Affected: 0 , ≤ 2.3.7 (semver)
guessed Create a notification for this product.
Credits
daroo
Show details on NVD website
To clipboard 

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    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Mang Board WP",
          "vendor": "kitae-park",
          "versions": [
            {
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              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
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          "type": "finder",
          "value": "daroo"
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      "descriptions": [
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          "value": "The Mang Board WP plugin for WordPress is vulnerable to Missing Authorization via Authentication Cookie Forgery in all versions up to, and including, 2.3.7. This is due to flawed HMAC generation in the mbw_get_hash_key() function that uses the current user\u0027s identity instead of the cookie username parameter when a WordPress user is logged in, combined with insufficient validation in mbw_validate_auth_cookie(). This makes it possible for authenticated attackers, with subscriber-level access and above, to forge administrator authentication cookies and change administrator passwords to achieve complete site takeover."
        }
      ],
      "metrics": [
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            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-269",
              "description": "CWE-269 Improper Privilege Management",
              "lang": "en",
              "type": "CWE"
            }
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      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-26T07:42:01.311Z",
        "orgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599",
        "shortName": "Wordfence"
      },
      "references": [
        {
          "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/ae75196d-2128-4da8-a90b-a62454dcdbe9?source=cve"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/mangboard/tags/2.3.6/models/admin/users.php#L125"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/mangboard/tags/2.3.6/includes/functions/func.board.php#L32"
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        {
          "url": "https://plugins.trac.wordpress.org/browser/mangboard/tags/2.3.6/api/mb-template.php#L36"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/mangboard/tags/2.3.5/models/admin/users.php#L125"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/mangboard/tags/2.3.5/includes/functions/func.board.php#L32"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/mangboard/tags/2.3.5/includes/functions/func.board.php#L1581"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/mangboard/tags/2.3.5/includes/functions/func.user.php#L447"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/mangboard/tags/2.3.5/api/mb-template.php#L36"
        },
        {
          "url": "https://plugins.trac.wordpress.org/changeset/3664567/"
        }
      ],
      "timeline": [
        {
          "lang": "en",
          "time": "2026-08-18T18:33:14.000Z",
          "value": "Vendor Notified"
        },
        {
          "lang": "en",
          "time": "2026-08-25T00:00:00.000Z",
          "value": "Disclosed"
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      "title": "Mang Board WP \u003c= 2.3.7 - Authenticated (Subscriber+) Privilege Escalation to Forged Authentication Cookie"
    }
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  "cveMetadata": {
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    "assignerShortName": "Wordfence",
    "cveId": "CVE-2026-75977",
    "datePublished": "2026-08-26T07:42:01.311Z",
    "dateReserved": "2026-08-18T18:13:29.343Z",
    "dateUpdated": "2026-08-26T07:42:01.311Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}



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