CVE-2025-46522 Overview
CVE-2025-46522 is a Cross-Site Request Forgery (CSRF) vulnerability in the Billy Bryant gt-tabs (Tabs) WordPress plugin that leads to Stored Cross-Site Scripting (XSS). The flaw affects all plugin versions up to and including 4.0.3. An attacker can craft a malicious request that, when triggered by an authenticated administrator visiting a hostile page, injects persistent JavaScript into the WordPress site. The stored payload then executes in the browser of any subsequent visitor or administrator, enabling session hijacking, privilege abuse, or further site compromise.
Critical Impact
Successful exploitation results in persistent JavaScript execution within the WordPress admin context, enabling account takeover and downstream site compromise through a single tricked administrator click.
Affected Products
- Billy Bryant Tabs (gt-tabs) plugin for WordPress
- All versions from initial release through 4.0.3
- WordPress sites with the plugin active and administrators authenticated in-browser
Discovery Timeline
- 2025-04-24 - CVE-2025-46522 published to NVD
- 2026-04-23 - Last updated in NVD database
Technical Details for CVE-2025-46522
Vulnerability Analysis
The vulnerability chains two weaknesses in the gt-tabs plugin. First, state-changing administrative actions lack CSRF protection, meaning the plugin does not validate a WordPress nonce or equivalent anti-forgery token on submission [CWE-352]. Second, user-supplied input handled by those actions is stored without adequate sanitization or output encoding, producing a Stored XSS sink.
An attacker combines both flaws by hosting a page that auto-submits a forged request to the vulnerable plugin endpoint. When an authenticated WordPress administrator visits the page, the browser includes session cookies, and the plugin accepts the request as legitimate. The attacker-controlled markup is persisted in the database and rendered on subsequent page loads, executing JavaScript under the site's origin.
Root Cause
The root cause is the absence of CSRF token verification on plugin endpoints that accept and store tab content. WordPress provides wp_nonce_field() and check_admin_referer() primitives for this purpose, but the plugin does not enforce them on the affected actions. Combined with missing output escaping when the stored data is rendered, the missing nonce check elevates a CSRF issue into a persistent XSS condition.
Attack Vector
Exploitation requires user interaction: the targeted administrator must visit an attacker-controlled or compromised page while logged in to WordPress. The page issues a cross-origin POST to the vulnerable plugin handler, supplying JavaScript inside a field that the plugin saves verbatim. Once stored, the payload executes whenever the affected tab content is rendered, expanding the attack from a single victim to every subsequent visitor of the page.
No authentication is required from the attacker, and the payload can be delivered through phishing, malvertising, or watering-hole pages. Detailed technical write-up is available in the Patchstack Vulnerability Report.
Detection Methods for CVE-2025-46522
Indicators of Compromise
- Unexpected <script>, onerror, or onload attributes inside tab content stored in the WordPress wp_posts or plugin-specific options tables.
- Outbound requests from visitor browsers to unfamiliar domains originating from pages that embed gt-tabs shortcodes.
- New or modified administrator accounts shortly after an administrator visited an external link.
Detection Strategies
- Audit plugin-managed database rows for HTML or JavaScript content that should not appear in tab fields.
- Review WordPress access logs for POST requests to gt-tabs admin endpoints lacking a valid Referer header from the same origin.
- Inspect rendered pages with browser developer tools or automated DOM scanners to flag injected script nodes.
Monitoring Recommendations
- Enable WordPress activity logging to capture plugin setting changes and correlate them with administrator session activity.
- Deploy a Web Application Firewall (WAF) rule set to alert on cross-origin POSTs to /wp-admin/admin.php lacking nonces.
- Monitor for sudden additions of inline JavaScript in front-end HTML through periodic content integrity checks.
How to Mitigate CVE-2025-46522
Immediate Actions Required
- Deactivate the gt-tabs plugin until a patched release is installed and verified.
- Force a password reset for all administrator and editor accounts that were active during the exposure window.
- Purge any stored tab content of unexpected HTML and re-enter trusted values manually.
Patch Information
At the time of publication, no fixed version above 4.0.3 is documented in the available references. Site owners should consult the Patchstack Vulnerability Report for the latest vendor response and apply any subsequent update from the plugin author immediately upon release.
Workarounds
- Remove the plugin entirely if a patched version is unavailable and replace its functionality with a maintained alternative.
- Restrict WordPress administrative access to dedicated browser profiles or sessions that do not browse untrusted sites.
- Enforce a strict Content Security Policy (CSP) that blocks inline scripts and unapproved script sources on the WordPress front end.
# Disable the vulnerable plugin via WP-CLI until a fix is available
wp plugin deactivate gt-tabs
wp plugin delete gt-tabs
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
