CVE-2025-11262
Deferred Deferred - Pending Action
Stored XSS in Link Whisper Free WordPress Plugin

Publication date: 2026-05-29

Last updated on: 2026-05-29

Assigner: Wordfence

Description
The Link Whisper Free plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the user_id parameter in all versions up to, and including, 0.9.0 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
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Meta Information
Published
2026-05-29
Last Modified
2026-05-29
Generated
2026-06-19
AI Q&A
2026-05-29
EPSS Evaluated
2026-06-18
NVD
CVE-2025-11262
EUVD
EUVD-2025-209983
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
link_whisper link_whisper_free to 0.9.0 (inc)
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.
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Compliance Impact

The vulnerability in the Link Whisper Free plugin allows unauthenticated attackers to inject arbitrary web scripts via stored cross-site scripting (XSS). This can lead to unauthorized access or manipulation of user data when users access the injected pages.

Such unauthorized access or data manipulation could potentially impact compliance with data protection regulations like GDPR and HIPAA, which require safeguarding personal data against unauthorized access and ensuring data integrity.

However, the provided information does not explicitly detail the direct impact on compliance with these standards.

Mitigation Strategies

The vulnerability affects all versions of the Link Whisper Free plugin up to and including 0.9.0. Immediate mitigation steps include updating the plugin to a version later than 0.9.0 where the vulnerability is fixed.

If an update is not immediately available, consider disabling or removing the Link Whisper Free plugin to prevent exploitation.

Additionally, monitor your WordPress site for any suspicious activity or unexpected script injections, and ensure proper input sanitization and output escaping are enforced in your environment.

Executive Summary

The Link Whisper Free plugin for WordPress has a Stored Cross-Site Scripting (XSS) vulnerability in all versions up to and including 0.9.0. This vulnerability arises because the plugin does not properly sanitize or escape the user_id parameter. As a result, unauthenticated attackers can inject malicious web scripts into pages. These scripts execute whenever any user accesses the infected page.

Impact Analysis

This vulnerability can allow attackers to execute arbitrary scripts in the context of your website without needing to be authenticated. This can lead to theft of user credentials, session hijacking, defacement of your website, or distribution of malware to visitors. Because the attack is stored, the malicious script persists and affects every user who views the compromised page.

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