External risk intelligence

Advanced Views Plugin Subscriber Remote Code Execution.

CVE advisorySeverity: CRITICAL (CVSS 9.9)

CVE-2026-59543

The vulnerability affects a WordPress plugin, which is commonly deployed as part of an internet-facing web application. Since web applications are designed to be accessed via the public internet, the attack surface is considered likely to be exposed.

Code Injection

Halo Surface Signal: 4 out of 5 — likely to be public-facing.

External exposure likelihood

Horizon Alert

Summary of the vulnerability and why it matters

A critical vulnerability has been identified in Advanced Views, a component used for creating specific views within websites. This issue could allow an unauthenticated user to execute malicious code on affected systems, potentially leading to a complete compromise of the web application. The primary concern is to confirm if this specific component is in use within your environment.

Remote code execution in website views.
Critical flaw allows significant system access.
Confirm if this component is deployed.

Attack Path

How an attacker could exploit the issue

An attacker could exploit a vulnerability in the Advanced Views component by sending specially crafted requests over the network. This could allow them to execute arbitrary code on the affected system, leading to a complete compromise.

Network access required.
Vulnerable component triggered remotely.
Leads to full system compromise.

Live Threat

Current exploitation, exposure, and threat context

A critical vulnerability in Advanced Views could allow a logged-in subscriber to execute arbitrary code on the affected system. This may occur when a user with subscriber privileges interacts with a vulnerable feature of the plugin, potentially leading to a compromise of the application's integrity and confidentiality.

System data could be exposed.
Code execution via network requests.
Compromise of application integrity.

Operational Fix

Recommended remediation, mitigation, and detection steps

To address this remote code execution vulnerability in Advanced Views, infrastructure and platform teams are likely responsible for identifying the presence and business criticality of affected instances. Coordination with security and vendor-management teams will be crucial for planning and executing remediation, prioritizing efforts based on exposure and impact.

Infrastructure or platform team owns the issue.
Verify plugin exposure and business criticality.
Plan coordinated vendor-assisted remediation.

Supplementary metadata

CVSS vector

Validate whether this threat affects your internet-facing exposure.

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Frequently asked questions

What is the Advanced Views plugin?

Advanced Views is a WordPress plugin designed to help site administrators create, manage, and display custom data views without needing complex coding. It serves as a structural component for organizing content layouts, often used by developers to enhance how information is presented to visitors on a WordPress-powered website.

What does CWE-94 mean for CVE-2026-59543?

This vulnerability is classified as CWE-94, which refers to Improper Control of Generation of Code. In plain English, the plugin incorrectly processes input, allowing a user to inject and execute their own unauthorized commands. Because the system treats this malicious input as legitimate instructions, it essentially gives an attacker the ability to run arbitrary code on the underlying server.

How is this vulnerability triggered?

The flaw is triggered when an attacker with a subscriber account sends a specifically crafted network request to the plugin. It is important to note that this is not a blind attack that works for anyone; it requires the attacker to possess an active subscriber-level account to interact with the vulnerable feature. If a user does not have this specific level of access, they cannot initiate the malicious code execution path.

Is my site at risk according to Halo Surface Signal?

Halo Surface Signal identifies this as likely exposed because Advanced Views is a WordPress plugin typically installed on web applications intended for public internet access. Since the plugin's core function is to handle content that users interact with directly, it often resides on the internet-facing portion of your infrastructure, making it a reachable target for external network requests.

What should I do if I use Advanced Views?

First, verify if you are running version 3.8.11 or earlier of the plugin. If you are, prioritize assessing the business criticality of the affected site and coordinate with your technical team to plan a controlled update. Since the vulnerability requires subscriber access, you should also review your site's user registration settings to ensure that unauthorized or untrusted users cannot easily obtain subscriber-level accounts.

References

patchstack.com/database/wordpress/plugin/acf-views/vulnerability/wor…

Written by Nicholas Merritt

Nicholas Merritt is VP of Security Solutions at Halo Security. With more than 25 years across application security, vulnerability prioritization, and offensive security, he helps teams translate threat data into practical exposure validation and remediation focus. He authors Halo Threat Intelligence CVE advisories using Halo Surface Signal and H/A/L/O context to prioritize internet-facing risk.