CVE-2026-42775 Overview
CVE-2026-42775 is an unauthenticated Cross-Site Scripting (XSS) vulnerability affecting the AutomatorWP WordPress plugin in versions up to and including 5.7.2. The flaw is classified under [CWE-79] (Improper Neutralization of Input During Web Page Generation). An unauthenticated attacker can inject malicious script content that executes in the context of a victim's browser when they interact with a crafted request or link. Successful exploitation can lead to session compromise, redirection, defacement, or the delivery of follow-on payloads against authenticated WordPress users, including administrators.
Critical Impact
A remote, unauthenticated attacker can execute arbitrary JavaScript in a victim's browser session, potentially hijacking authenticated WordPress administrator sessions on affected sites.
Affected Products
- AutomatorWP WordPress plugin versions <= 5.7.2
- WordPress installations with the vulnerable AutomatorWP plugin enabled
- All WordPress sites exposing the plugin's vulnerable entry point to untrusted users
Discovery Timeline
- 2026-06-15 - CVE-2026-42775 published to the National Vulnerability Database (NVD)
- 2026-06-17 - Last updated in the NVD database
Technical Details for CVE-2026-42775
Vulnerability Analysis
The vulnerability is a reflected or stored Cross-Site Scripting issue mapped to [CWE-79]. AutomatorWP fails to properly neutralize user-supplied input before including it in HTML output rendered to clients. The attack vector is Network and requires no authentication, but does require user interaction such as visiting a crafted URL or page. Because the vulnerability scope is changed under the CVSS model, injected scripts can affect resources beyond the vulnerable component, including the WordPress administrative interface used by site operators.
Root Cause
The root cause is improper neutralization of input during web page generation. The plugin embeds attacker-controlled values into the HTML response without sufficient output encoding or input sanitization. Standard WordPress escaping functions such as esc_html(), esc_attr(), or wp_kses() are either missing or incorrectly applied along the affected code path. As a result, JavaScript supplied by an attacker executes when the page renders in a victim's browser.
Attack Vector
An attacker crafts a request or URL containing JavaScript payload data targeting the vulnerable AutomatorWP endpoint. The attacker delivers the link via phishing email, social media, or another untrusted channel. When an authenticated WordPress user, typically an administrator, follows the link, the payload executes in the browser under the site's origin. The script can read cookies that are not marked HttpOnly, perform actions on behalf of the user, exfiltrate data, or pivot to plugin or theme modifications that lead to remote code execution.
No verified public exploit code is available for CVE-2026-42775. Technical details are documented in the Patchstack WordPress Vulnerability Report.
Detection Methods for CVE-2026-42775
Indicators of Compromise
- Inbound HTTP requests to AutomatorWP plugin endpoints containing <script>, javascript:, onerror=, or onload= substrings in query or POST parameters
- Unexpected WordPress administrator account creation, role changes, or plugin installations following user interaction with external links
- Outbound browser requests from admin sessions to unfamiliar domains hosting JavaScript payloads
- Web server access logs showing URL-encoded payloads such as %3Cscript%3E targeting AutomatorWP URIs
Detection Strategies
- Inspect Web Application Firewall (WAF) and reverse proxy logs for XSS signatures directed at AutomatorWP request paths
- Monitor WordPress audit logs for privileged actions performed shortly after an administrator clicked an external link
- Hunt for newly added administrative users, modified wp_options entries, or unauthorized plugin uploads correlated with suspicious referrers
Monitoring Recommendations
- Enable verbose WordPress activity logging and forward events to a centralized log platform for correlation
- Alert on anomalous browser-originated requests from admin sessions, particularly cross-origin script loads
- Track AutomatorWP plugin version inventory across all WordPress sites to confirm patch status
How to Mitigate CVE-2026-42775
Immediate Actions Required
- Identify all WordPress installations running AutomatorWP version 5.7.2 or earlier and update to the latest patched release
- Until the patch is applied, disable or remove the AutomatorWP plugin on exposed sites
- Force a session reset and password rotation for WordPress administrators who may have interacted with untrusted links
- Review WordPress user, plugin, and theme inventories for unauthorized changes
Patch Information
Refer to the Patchstack advisory for AutomatorWP for the fixed version and upgrade guidance. Update AutomatorWP through the WordPress plugin manager or by replacing the plugin directory with the patched release.
Workarounds
- Deploy a WAF rule blocking requests to AutomatorWP endpoints that contain HTML or JavaScript metacharacters such as <, >, and javascript:
- Restrict access to WordPress administrative paths by IP allowlist where feasible
- Configure a strict Content-Security-Policy header that disallows inline scripts and untrusted script origins
- Ensure session cookies are issued with the HttpOnly and Secure attributes to limit the impact of script execution
# Example: Update AutomatorWP via WP-CLI on affected hosts
wp plugin update automatorwp --version=<patched_version>
wp plugin list --name=automatorwp --fields=name,status,version
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
