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CVE-2026-75977— Mang Board WP <= 2.3.7 - Authenticated (Subscriber+) Privilege Escalation to Forged Authentication Cookie

Quick assessment

Affected
kitae-park Mang Board WP
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

WordPress Mang Board WP是WordPress基金会开源的一款论坛社区组件。 WordPress Mang Board WP 2.3.7及之前版本存在权限许可和访问控制问题漏洞，该漏洞源于mbw_get_hash_key()函数中HMAC生成存在缺陷，使用当前用户身份而非cookie用户名参数，同时mbw_validate_auth_cookie()验证不足，可能导致经过身份验证的攻击者伪造管理员认证Cookie并修改管理员密码，实现完全接管站点。

CVSS 8.8 · High EPSS 0.86% · P58

Affected Version Matrix 1

VendorProduct Version RangeStatus
kitae-park Mang Board WP ≤ 2.3.7 affected
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I. Basic Information for CVE-2026-75977

Vulnerability Information
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Vulnerability Title
Mang Board WP <= 2.3.7 - Authenticated (Subscriber+) Privilege Escalation to Forged Authentication Cookie
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
特权管理不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
WordPress Mang Board WP 权限许可和访问控制问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress Mang Board WP是WordPress基金会开源的一款论坛社区组件。 WordPress Mang Board WP 2.3.7及之前版本存在权限许可和访问控制问题漏洞，该漏洞源于mbw_get_hash_key()函数中HMAC生成存在缺陷，使用当前用户身份而非cookie用户名参数，同时mbw_validate_auth_cookie()验证不足，可能导致经过身份验证的攻击者伪造管理员认证Cookie并修改管理员密码，实现完全接管站点。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
kitae-park Mang Board WP 0 ~ 2.3.7 -

II. Public POCs for CVE-2026-75977

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III. Intelligence Information for CVE-2026-75977

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Other References for CVE-2026-75977 (5)

IV. Related Vulnerabilities

Same product: Mang Board WP
Same vendor: kitae-park
Same weakness: CWE-269

V. Comments for CVE-2026-75977

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