CVE-2024-33631 Overview
CVE-2024-33631 is a stored cross-site scripting (XSS) vulnerability in the Piotnet Addons For Elementor Pro WordPress plugin. The flaw affects all versions from an unspecified initial release through 7.1.17. Authenticated attackers with low privileges can inject malicious scripts that persist in web pages generated by the plugin. When other users visit affected pages, the stored payload executes in their browsers under the site's origin.
The vulnerability is categorized as [CWE-79], Improper Neutralization of Input During Web Page Generation. It requires user interaction to trigger but crosses security scopes, potentially compromising site administrators or visitors.
Critical Impact
Authenticated attackers can inject persistent JavaScript payloads that execute in victim browsers, enabling session hijacking, credential theft, and administrative account takeover on affected WordPress sites.
Affected Products
- Piotnet Addons For Elementor Pro (WordPress plugin)
- All versions from initial release through 7.1.17
- WordPress installations using the vulnerable plugin
Discovery Timeline
- 2024-04-29 - CVE-2024-33631 published to NVD
- 2026-06-17 - Last updated in NVD database
Technical Details for CVE-2024-33631
Vulnerability Analysis
The vulnerability stems from improper neutralization of user-supplied input rendered into plugin-generated web pages. Piotnet Addons For Elementor Pro fails to sanitize or encode input before storing it and rendering it back to the DOM. This allows attackers holding contributor-level or higher accounts to persist arbitrary JavaScript in plugin fields.
Stored XSS payloads execute whenever any user loads the affected page. Because the payload runs in the browser context of the target site, attackers can steal session cookies, perform actions on behalf of authenticated users, and pivot toward administrative account compromise. The scope change indicated in the CVSS vector reflects that the impact extends beyond the vulnerable component to other users' browser sessions.
Root Cause
The root cause is missing output encoding and input sanitization in plugin components that accept user input and later render it as HTML. WordPress functions such as esc_html(), esc_attr(), and wp_kses() were either not applied or applied insufficiently to fields controlled by lower-privileged users.
Attack Vector
An authenticated attacker with at least contributor privileges submits crafted input containing HTML or JavaScript payloads through a plugin-exposed field. The plugin stores the payload without neutralization. When an administrator or other user views the resulting content, the script executes in their session. See the Patchstack Vulnerability Report for additional technical detail.
Detection Methods for CVE-2024-33631
Indicators of Compromise
- Unexpected <script> tags, onerror, or onload attributes stored in Elementor widget content or plugin database entries
- Outbound requests from administrator browsers to unfamiliar external domains after visiting plugin-rendered pages
- New administrator accounts or modified user roles created shortly after a low-privileged user submitted plugin content
- Anomalous wp_options or postmeta entries containing encoded JavaScript payloads
Detection Strategies
- Audit WordPress post content and plugin-specific database tables for HTML event handlers and script tags in fields authored by non-administrative users
- Deploy a web application firewall rule set that inspects POST parameters submitted to plugin endpoints for XSS signatures
- Review WordPress user activity logs for content edits by contributor or author accounts that touched plugin widgets
Monitoring Recommendations
- Enable a Content Security Policy (CSP) in report-only mode to surface inline script executions on pages rendered by the plugin
- Monitor session token usage for administrator accounts, flagging concurrent sessions from disparate IP addresses
- Log and alert on privilege escalation events and unexpected changes to WordPress user roles
How to Mitigate CVE-2024-33631
Immediate Actions Required
- Update Piotnet Addons For Elementor Pro to a version later than 7.1.17 once the vendor publishes a fixed release
- Audit existing contributor, author, and editor accounts and remove any that are unnecessary or inactive
- Inspect plugin-authored content for stored payloads and remove malicious entries before restoring public access
Patch Information
The vulnerability affects Piotnet Addons For Elementor Pro through version 7.1.17. Refer to the Patchstack Vulnerability Report for the current patch status and vendor advisory updates. Apply the vendor-supplied update as soon as it becomes available.
Workarounds
- Deactivate the Piotnet Addons For Elementor Pro plugin until a patched version is installed
- Restrict content-editing capabilities so only trusted administrators can author pages using plugin widgets
- Deploy a web application firewall with rules blocking XSS payload patterns in plugin request parameters
- Enforce a strict Content Security Policy that disallows inline scripts and untrusted third-party sources
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
