Mang Board WP <= 2.3.7 - Authenticated (Subscriber+) Privilege Escalation to Forged Authentication Cookie
Summary
| CVE | CVE-2026-75977 |
|---|---|
| State | PUBLISHED |
| Assigner | Wordfence |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-08-26 08:16:46 UTC |
| Updated | 2026-08-26 16:19:05 UTC |
| Description | 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. |
Risk And Classification
Primary CVSS: v3.1 8.8 HIGH from [email protected]
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS: 0.006230000 probability, percentile 0.472620000 (date 2026-08-26)
Problem Types: CWE-269 | CWE-269 CWE-269 Improper Privilege Management
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | [email protected] | Secondary | 8.8 | HIGH | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| 3.1 | CNA | DECLARED | 8.8 | HIGH | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
CVSS v3.1 Breakdown
Attack Vector
NetworkAttack Complexity
LowPrivileges Required
LowUser Interaction
NoneScope
UnchangedConfidentiality
HighIntegrity
HighAvailability
HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Kitae-park | Mang Board WP | affected 2.3.7 semver | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| plugins.trac.wordpress.org/browser/mangboard/tags/2.3.6/includes/functions/func.user.php | [email protected] | plugins.trac.wordpress.org | |
| plugins.trac.wordpress.org/browser/mangboard/tags/2.3.6/api/mb-template.php | [email protected] | plugins.trac.wordpress.org | |
| plugins.trac.wordpress.org/browser/mangboard/tags/2.3.5/models/admin/users.php | [email protected] | plugins.trac.wordpress.org | |
| plugins.trac.wordpress.org/browser/mangboard/tags/2.3.5/includes/functions/func.board.php | [email protected] | plugins.trac.wordpress.org | |
| plugins.trac.wordpress.org/browser/mangboard/tags/2.3.6/includes/functions/func.board.php | [email protected] | plugins.trac.wordpress.org | |
| plugins.trac.wordpress.org/browser/mangboard/tags/2.3.5/api/mb-template.php | [email protected] | plugins.trac.wordpress.org | |
| plugins.trac.wordpress.org/browser/mangboard/tags/2.3.5/includes/functions/func.board.php | [email protected] | plugins.trac.wordpress.org | |
| plugins.trac.wordpress.org/changeset/3664567 | [email protected] | plugins.trac.wordpress.org | |
| www.wordfence.com/threat-intel/vulnerabilities/id/ae75196d-2128-4da8-a90b-a6245... | [email protected] | www.wordfence.com | |
| plugins.trac.wordpress.org/browser/mangboard/tags/2.3.6/includes/functions/func.board.php | [email protected] | plugins.trac.wordpress.org | |
| plugins.trac.wordpress.org/browser/mangboard/tags/2.3.6/models/admin/users.php | [email protected] | plugins.trac.wordpress.org | |
| plugins.trac.wordpress.org/browser/mangboard/tags/2.3.5/includes/functions/func.user.php | [email protected] | plugins.trac.wordpress.org | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
Vendor Comments And Credit
Discovery Credit
CNA: daroo (en)
Additional Advisory Data
| Source | Time | Event |
|---|---|---|
| CNA | 2026-08-18T18:33:14.000Z | Vendor Notified |
| CNA | 2026-08-25T00:00:00.000Z | Disclosed |
There are currently no legacy QID mappings associated with this CVE.