CVE-2026-83541 Overview
CVE-2026-83541 is a Stored Cross-Site Scripting (XSS) vulnerability [CWE-79] in the Sina Extension for Elementor WordPress plugin. Versions prior to 3.10.4 fail to properly escape a Table widget setting before rendering it inside an HTML attribute. Authenticated users with the Contributor role or higher can inject malicious JavaScript that executes in the browsers of other users who view the affected content. The flaw enables session theft, privilege escalation through administrative actions, and content manipulation across the WordPress site.
Critical Impact
Contributor-level accounts can store JavaScript payloads that execute against administrators, enabling account takeover and site compromise.
Affected Products
- Sina Extension for Elementor WordPress plugin versions prior to 3.10.4
- WordPress sites using the vulnerable plugin with Contributor-or-above user roles
- Any Elementor-based page rendering a Table widget authored by an untrusted user
Discovery Timeline
- 2026-09-09 - CVE-2026-83541 published to NVD
- 2026-09-09 - Last updated in NVD database
Technical Details for CVE-2026-83541
Vulnerability Analysis
The Sina Extension for Elementor plugin exposes a Table widget that accepts configuration values from authenticated editors. One of those settings is written directly into an HTML attribute in the generated markup without proper escaping. An authenticated user with at least the Contributor role can set the value to a crafted string that breaks out of the attribute context and injects arbitrary JavaScript.
When an editor, author, or administrator later previews or opens a post containing the widget, the injected script executes in their authenticated session. The stored nature of the payload means it persists in the database and fires on every subsequent view. The vulnerability is tracked under CWE-79: Improper Neutralization of Input During Web Page Generation.
Root Cause
The plugin renders a Table widget setting into an HTML attribute using output that is not passed through esc_attr() or an equivalent WordPress escaping function. Attribute-context escaping is required to neutralize quote characters and event handler injection. Without it, a Contributor can supply a value that closes the surrounding attribute and appends a new event handler such as onmouseover or onload.
Attack Vector
Exploitation requires an authenticated account with the Contributor role or higher and user interaction from a victim viewing the affected content. The attacker edits or creates a post that uses the Sina Extension Table widget and supplies a malicious value in the vulnerable setting. When the post is rendered — either in the admin preview or on the public site — the payload executes in the victim's browser under the site's origin. Refer to the WPScan Vulnerability Report for the underlying research.
Detection Methods for CVE-2026-83541
Indicators of Compromise
- Sina Extension for Elementor plugin installed at a version below 3.10.4
- Table widget configurations containing HTML attribute delimiters, on* event handlers, or <script> fragments in setting fields
- Post or page metadata containing serialized Elementor data with suspicious JavaScript strings
- Unexpected outbound requests from administrator browsers shortly after previewing Contributor-authored content
Detection Strategies
- Query the WordPress wp_postmeta table for Elementor data containing suspicious tokens such as onerror=, onmouseover=, or javascript: within Sina Table widget definitions
- Review the plugin version reported by WordPress and confirm it is at or above 3.10.4
- Enable Content Security Policy (CSP) reporting to surface inline script execution attempts on pages rendering the Table widget
Monitoring Recommendations
- Audit accounts granted the Contributor role or above and flag recent additions or role escalations
- Monitor WordPress audit logs for post edits that modify Sina Extension widget attributes
- Track admin session activity for anomalous actions performed immediately after viewing user-submitted content
How to Mitigate CVE-2026-83541
Immediate Actions Required
- Upgrade the Sina Extension for Elementor plugin to version 3.10.4 or later on all WordPress installations
- Review existing Contributor, Author, and Editor accounts and remove any that are unnecessary or unrecognized
- Inspect posts and pages that use the Sina Table widget for injected payloads and sanitize or remove affected entries
Patch Information
The vendor addressed CVE-2026-83541 in Sina Extension for Elementor version 3.10.4 by applying attribute-context escaping to the affected Table widget setting. Administrators should update through the WordPress plugin manager or by downloading the fixed release from the official repository. See the WPScan Vulnerability Report for advisory details.
Workarounds
- Temporarily disable the Sina Extension for Elementor plugin until the update is applied
- Restrict the ability to author content using the Sina Table widget to trusted Administrator accounts
- Deploy a Web Application Firewall (WAF) rule that blocks HTML event handler patterns in Elementor widget submissions
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
