CVE-2025-13839: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in jenyay LJUsers
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.
AI Analysis
Technical Summary
CVE-2025-13839 is a stored cross-site scripting vulnerability in the LJUsers WordPress plugin (versions up to 1.2.0). It occurs due to improper neutralization of input in the 'name' parameter of the 'ljuser' shortcode, allowing authenticated users with Contributor-level privileges or higher to inject arbitrary web scripts. These scripts execute in the context of users visiting the injected pages, potentially leading to information disclosure or session hijacking. The vulnerability has a CVSS 3.1 base score of 6.4 (AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N), reflecting network attack vector, low attack complexity, and partial confidentiality and integrity impact.
Potential Impact
An authenticated attacker with Contributor-level access or higher can exploit this vulnerability to inject persistent malicious scripts into pages via the 'name' parameter. These scripts execute in the browsers of users who visit the affected pages, potentially leading to partial confidentiality and integrity breaches such as theft of user credentials or manipulation of page content. There is no impact on availability. No known exploits in the wild have been reported.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict Contributor-level access to trusted users only and consider disabling or removing the LJUsers plugin if feasible. Monitor for updates from the vendor or plugin maintainers regarding patches or official mitigations.
CVE-2025-13839: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in jenyay LJUsers
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.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2025-13839 is a stored cross-site scripting vulnerability in the LJUsers WordPress plugin (versions up to 1.2.0). It occurs due to improper neutralization of input in the 'name' parameter of the 'ljuser' shortcode, allowing authenticated users with Contributor-level privileges or higher to inject arbitrary web scripts. These scripts execute in the context of users visiting the injected pages, potentially leading to information disclosure or session hijacking. The vulnerability has a CVSS 3.1 base score of 6.4 (AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N), reflecting network attack vector, low attack complexity, and partial confidentiality and integrity impact.
Potential Impact
An authenticated attacker with Contributor-level access or higher can exploit this vulnerability to inject persistent malicious scripts into pages via the 'name' parameter. These scripts execute in the browsers of users who visit the affected pages, potentially leading to partial confidentiality and integrity breaches such as theft of user credentials or manipulation of page content. There is no impact on availability. No known exploits in the wild have been reported.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict Contributor-level access to trusted users only and consider disabling or removing the LJUsers plugin if feasible. Monitor for updates from the vendor or plugin maintainers regarding patches or official mitigations.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Wordfence
- Date Reserved
- 2025-12-01T18:46:14.653Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 693b7fd3650da22753e7b189
Added to database: 12/12/2025, 2:37:07 AM
Last enriched: 4/9/2026, 4:36:46 PM
Last updated: 5/8/2026, 4:17:29 AM
Views: 134
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