CVE-2026-16537
Received Received - Intake

Stored XSS in Slick Slider WordPress Plugin

Publication date: 2026-08-06

Last updated on: 2026-08-06

Assigner: WPScan

Description
The Slick Slider WordPress plugin before 0.5.3 does not sanitize and escape a shortcode attribute value before outputting it in an HTML attribute, allowing users with the Contributor role and above to perform Stored Cross-Site Scripting attacks that execute when a user views the affected post.

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Meta Information

Published
2026-08-06
Last Modified
2026-08-06
Generated
2026-08-17
AI Q&A
2026-08-06
EPSS Evaluated
2026-08-16
NVD
CVE-2026-16537
EUVD
EUVD-2026-53733

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
wp_slick_slider slick_slider to 0.5.3 (exc)

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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Executive Summary

The Slick Slider WordPress plugin before version 0.5.3 has a stored Cross-Site Scripting (XSS) vulnerability. It fails to sanitize and escape a shortcode attribute value before outputting it in an HTML attribute. This allows users with Contributor role or higher to inject malicious scripts that execute when others view the affected post.

Detection Guidance

Check the installed version of the Slick Slider WordPress plugin. If it is below 0.5.3, the system is vulnerable. Use commands like 'wp plugin list' in WordPress CLI or inspect the plugin files for version details.

Impact Analysis

Attackers with Contributor access or higher can inject malicious scripts into posts. When users view these posts, the scripts execute, potentially stealing session cookies, redirecting to malicious sites, or performing actions on behalf of the user.

Compliance Impact

This vulnerability could lead to unauthorized data access or modification, violating GDPR's data protection requirements or HIPAA's security rules. Organizations may face compliance penalties if user data is compromised through such attacks.

Mitigation Strategies

Update the Slick Slider plugin to version 0.5.3 or later immediately. If updating is not possible, consider disabling the plugin temporarily until an update is applied.

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