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CVE-2026-15459— WPMU DEV Dashboard <= 5.0.0 - Authentication Bypass to Arbitrary Plugin Installation (Remote Code Execution) via Forged WDP_AUTH HMAC on ?wpmudev-hub= Endpoint

Quick assessment

Affected
wpmudev WPMU DEV Dashboard
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.

wpmudev WPMU DEV Dashboard是wpmudev公司的一款网站管理仪表板插件。 wpmudev WPMU DEV Dashboard 5.0.0及之前版本存在授权问题漏洞，该漏洞源于身份验证绕过，由于站点尚未连接WPMU DEV Hub时API密钥为空且5.0.0版本删除了重放检查并无能力校验，可能导致未经身份验证的攻击者调用特权Hub操作，包括安装和激活恶意插件造成远程代码执行、删除插件和主题、升级WordPress核心或通过SSO登录管理员。

CVSS 8.1 · High EPSS 0.87% · P57

Affected Version Matrix 1

VendorProduct Version RangeStatus
wpmudev WPMU DEV Dashboard ≤ 5.0.0 affected
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I. Basic Information for CVE-2026-15459

Vulnerability Information
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Vulnerability Title
WPMU DEV Dashboard <= 5.0.0 - Authentication Bypass to Arbitrary Plugin Installation (Remote Code Execution) via Forged WDP_AUTH HMAC on ?wpmudev-hub= Endpoint
Source: CVE Program / CVE List V5
Vulnerability Description
The WPMU DEV Dashboard plugin for WordPress is vulnerable to Authentication Bypass in all versions up to, and including, 5.0.0. On sites not yet connected to the WPMU DEV Hub — the default state after installation — the site API key that keys the WDP-AUTH request signature is empty, making the signature verified by validate_hash() trivially forgeable; version 5.0.0 additionally removed the replay check in validate_nonce(), and the remote handler is bound to the public init hook with no capability check. This makes it possible for unauthenticated attackers to invoke privileged Hub actions — including installing and activating a plugin from an attacker-supplied URL (resulting in remote code execution), deleting plugins and themes, upgrading WordPress core, or logging in as an administrator via SSO. Sites connected to a WPMU DEV account, which have a non-empty 64-character API key, are not affected.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
认证机制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
wpmudev WPMU DEV Dashboard 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
wpmudev WPMU DEV Dashboard是wpmudev公司的一款网站管理仪表板插件。 wpmudev WPMU DEV Dashboard 5.0.0及之前版本存在授权问题漏洞，该漏洞源于身份验证绕过，由于站点尚未连接WPMU DEV Hub时API密钥为空且5.0.0版本删除了重放检查并无能力校验，可能导致未经身份验证的攻击者调用特权Hub操作，包括安装和激活恶意插件造成远程代码执行、删除插件和主题、升级WordPress核心或通过SSO登录管理员。
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
wpmudev WPMU DEV Dashboard 0 ~ 5.0.0 -

II. Public POCs for CVE-2026-15459

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III. Intelligence Information for CVE-2026-15459

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Vendor Advisories for CVE-2026-15459 (1)

IV. Related Vulnerabilities

Same product: WPMU DEV Dashboard
Same vendor: wpmudev
Same weakness: CWE-287

V. Comments for CVE-2026-15459

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