CVE-2025-13839
Unknown Unknown - Not Provided

Stored XSS in LJUsers WordPress Plugin Allows Script Injection

Publication date: 2025-12-12

Last updated on: 2025-12-12

Assigner: Wordfence

Description
The LJUsers plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'name' parameter of the 'ljuser' shortcode in all versions up to, and including, 1.2.0 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

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Meta Information

Published
2025-12-12
Last Modified
2025-12-12
Generated
2026-07-06
AI Q&A
2025-12-12
EPSS Evaluated
2026-07-05
NVD
CVE-2025-13839

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
wordpress ljusers_plugin 1.2.0

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-79 The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

Attack-Flow Graph

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Mitigation Strategies

To mitigate this vulnerability, update the LJUsers plugin to a version later than 1.2.0 where the issue is fixed. Additionally, restrict Contributor-level access to trusted users only, and consider implementing input sanitization and output escaping measures on the 'name' parameter of the 'ljuser' shortcode if an update is not immediately possible.

Executive Summary

The LJUsers plugin for WordPress has a Stored Cross-Site Scripting (XSS) vulnerability in the 'name' parameter of the 'ljuser' shortcode. This occurs because the plugin does not properly sanitize or escape user-supplied input. As a result, authenticated users with Contributor-level access or higher can inject malicious scripts into pages, which will execute whenever those pages are viewed.

Impact Analysis

This vulnerability allows attackers with Contributor-level access or higher to inject arbitrary scripts into web pages. These scripts can execute in the context of other users viewing the affected pages, potentially leading to theft of user credentials, session hijacking, defacement, or other malicious actions that compromise the security and integrity of the website and its users.

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