CVE-2026-101162 Overview
CVE-2026-101162 is a Stored Cross-Site Scripting (XSS) vulnerability in the WP Ultimate Review WordPress plugin versions prior to 2.4.4. The plugin fails to escape several review overview settings before rendering them in posts. When author reviews are enabled, users with a role as low as Author can inject malicious JavaScript that executes in the browser of any visitor viewing the affected post. The flaw is classified under CWE-79 (Improper Neutralization of Input During Web Page Generation).
Critical Impact
Authenticated authors can inject persistent JavaScript into posts, enabling session hijacking, credential theft, and administrative action forgery against site visitors and administrators.
Affected Products
- WP Ultimate Review WordPress plugin versions prior to 2.4.4
- WordPress sites with the plugin installed and author reviews enabled
- Any site allowing untrusted users with Author-level privileges
Discovery Timeline
- 2026-10-03 - CVE-2026-101162 published to the National Vulnerability Database (NVD)
- 2026-10-06 - Last updated in the NVD database
Technical Details for CVE-2026-101162
Vulnerability Analysis
The vulnerability resides in the review overview settings handling within the WP Ultimate Review plugin. User-supplied content submitted through these settings is written directly into post output without proper HTML escaping. When a visitor loads a post containing a crafted review, the browser parses and executes the injected script in the context of the site's origin.
Stored XSS has a longer attack lifetime than reflected variants. The payload persists in the database and executes on every page view until an administrator removes it. Exploitation requires an authenticated account with Author permissions and the author-reviews feature enabled, limiting the attack surface to sites that accept community contributors.
Root Cause
The plugin does not apply esc_html(), esc_attr(), or equivalent WordPress sanitization APIs to review overview setting values before echoing them into post content. The failure to neutralize HTML and JavaScript metacharacters allows injected <script> tags and event handlers to render as live markup rather than inert text.
Attack Vector
An attacker with Author-level access authenticates to WordPress and creates or edits a post that uses the WP Ultimate Review block or shortcode. The attacker places a JavaScript payload inside one of the vulnerable review overview setting fields. When the post is saved and later rendered, the unsanitized payload executes in the browser of any viewer, including administrators. The script runs with the viewer's session, enabling cookie theft, forced administrative actions through the WordPress REST API, and account takeover.
Technical details are documented in the WPScan Vulnerability Report.
Detection Methods for CVE-2026-101162
Indicators of Compromise
- Posts or post meta containing <script>, onerror=, onload=, or javascript: sequences inside review overview fields
- Unexpected outbound requests from administrator browsers to attacker-controlled domains after viewing author-authored posts
- New administrator accounts or modified user roles following visits to posts containing reviews
- WordPress audit log entries showing review content edits by Author-role accounts followed by privileged activity
Detection Strategies
- Query the wp_posts and wp_postmeta tables for review-related content containing HTML tag characters or script fragments
- Monitor WordPress REST API calls originating from administrator sessions for unexpected user or plugin modifications
- Deploy a web application firewall rule to flag POST requests to post edit endpoints containing script-like payloads from Author-role users
Monitoring Recommendations
- Enable WordPress activity logging to track post creation and edits by non-Editor roles
- Alert on administrator session activity that occurs within seconds of loading a public post page
- Correlate Content Security Policy (CSP) violation reports with page URLs to identify active injection points
How to Mitigate CVE-2026-101162
Immediate Actions Required
- Update the WP Ultimate Review plugin to version 2.4.4 or later on all WordPress installations
- Audit all posts containing review blocks for unexpected HTML or script content and remove malicious payloads
- Review Author-role accounts for unauthorized or suspicious users and revoke access as needed
- Rotate administrator credentials and invalidate active sessions if exploitation is suspected
Patch Information
The vendor addressed the vulnerability in WP Ultimate Review version 2.4.4 by introducing output escaping on the affected review overview settings. Site administrators should apply the update through the WordPress plugin dashboard or by uploading the patched release. Refer to the WPScan Vulnerability Report for advisory details.
Workarounds
- Disable the author reviews feature in the plugin settings until the update is applied
- Restrict Author role assignment to trusted users only and remove the role from untrusted contributors
- Deploy a Content Security Policy that disallows inline scripts to reduce the impact of injected payloads
- Place a web application firewall in front of WordPress to block requests containing script tags in review fields
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.