CVE-2026-0609
Received Received - Intake

Stored XSS in Logo Slider WordPress Plugin Allows Script Injection

Publication date: 2026-03-21

Last updated on: 2026-03-21

Assigner: Wordfence

Description
The Logo Slider – Logo Carousel, Logo Showcase & Client Logo Slider Plugin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the image alt text in all versions up to, and including, 4.9.0 due to insufficient input sanitization and output escaping in the 'logo-slider' shortcode. This makes it possible for authenticated attackers, with author 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
2026-03-21
Last Modified
2026-03-21
Generated
2026-07-06
AI Q&A
2026-03-21
EPSS Evaluated
2026-07-05
NVD
CVE-2026-0609
EUVD
EUVD-2026-14168

Affected Vendors & Products

Currently, no data is known.

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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Executive Summary

The Logo Slider – Logo Carousel, Logo Showcase & Client Logo Slider Plugin for WordPress has a Stored Cross-Site Scripting (XSS) vulnerability in all versions up to and including 4.9.0. This vulnerability arises because the plugin does not properly sanitize and escape the image alt text used in its 'logo-slider' shortcode.

An authenticated attacker with author-level access or higher can exploit this flaw by injecting malicious scripts into the image alt text. These scripts are then stored and executed whenever any user accesses the affected page, potentially compromising their security.

Impact Analysis

This vulnerability allows an attacker with author-level access to inject arbitrary malicious scripts into pages via the image alt text. When other users visit these pages, the injected scripts execute in their browsers.

  • It can lead to theft of user credentials or session tokens.
  • It may enable unauthorized actions on behalf of users (such as changing settings or performing actions within the site).
  • It can result in defacement or manipulation of website content.
  • It undermines user trust and site integrity.
Compliance Impact

I don't know

Detection Guidance

I don't know

Mitigation Strategies

To mitigate this vulnerability, you should update the Logo Slider – Logo Carousel, Logo Showcase & Client Logo Slider Plugin to version 4.9.0 or later, where the stored Cross-Site Scripting (XSS) vulnerability has been fixed.

The fix involves sanitizing and escaping user inputs related to image alt text and other shortcode attributes to prevent malicious script injection.

Additionally, restrict author-level access and above to trusted users only, as the vulnerability requires authenticated users with author-level permissions to exploit.

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