CVE-2026-16051Public exploitNetwork attack vector

Remote code execution via unverified Hub package installation

Published Aug 12, 2026 · Updated Aug 12, 2026

Code injection in WPMU DEV Dashboard before 5.0.1 allows remote attackers to execute arbitrary PHP through a signed Hub install request. The front-end wpmudev-hub handler installs and activates attacker-hosted ZIP packages without integrity verification and accepts reused request identifiers without nonce validation. Possession of the site's account-wide WPMU DEV API key permits request forgery; a captured valid request permits only replay of its original action.

CVSS severity9.8
Critical
EPSS probability0.59%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Code injection in WPMU DEV Dashboard before 5.0.1 allows remote attackers to execute arbitrary PHP through a signed Hub install request. The front-end wpmudev-hub handler installs and activates attacker-hosted ZIP packages without integrity verification and accepts reused request identifiers without nonce validation. Possession of the site's account-wide WPMU DEV API key permits request forgery; a captured valid request permits only replay of its original action.

The record

CVE
CVE-2026-16051
Published
Aug 12, 2026
Updated
Aug 12, 2026
Vendor
WPMU DEV
Product
WPMU DEV Dashboard
Classifications
CWE-94, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 12, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 12, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <5.0.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

WPMU DEV · WPMU DEV Dashboardversion=0 <5.0.1

Published CVSS scores

9.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-94Improper Control of Generation of Code ('Code Injection')
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo