CVE-2025-13153 in Logo Slider Plugin
Summary
by MITRE • 01/02/2026
The Logo Slider WordPress plugin before 4.9.0 does not validate and escape some of its slider options before outputting them back in the dashboard, which could allow users with the contributor role and above to perform Stored Cross-Site Scripting attacks.
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Analysis
by VulDB Data Team • 01/02/2026
The vulnerability identified as CVE-2025-13153 affects the Logo Slider WordPress plugin version 4.9.0 and earlier, presenting a significant security risk through stored cross-site scripting flaws. This issue specifically targets the plugin's handling of slider options within the WordPress admin dashboard environment where contributors and higher-privileged users can manipulate data. The vulnerability stems from insufficient input validation and output escaping mechanisms that fail to properly sanitize user-supplied data before rendering it back to the dashboard interface. Attackers exploiting this weakness can inject malicious scripts that persist in the database and execute whenever the affected dashboard page loads, making it particularly dangerous for environments where multiple user roles have access to plugin configuration interfaces.
The technical implementation of this vulnerability aligns with CWE-79 which describes cross-site scripting flaws occurring when untrusted data is incorporated into web pages without proper validation and sanitization. The flaw exists in the plugin's data handling process where slider configuration options are stored in the WordPress database without adequate sanitization before being retrieved and displayed in the admin interface. This allows malicious actors with contributor privileges to craft script payloads that get executed in the context of other users' browsers when they access the dashboard. The stored nature of this XSS vulnerability means that the malicious code persists even after the initial injection, making it particularly challenging to detect and remediate. The vulnerability affects the plugin's dashboard functionality where users can configure slider parameters, including image URLs, text content, and other display options that are subsequently rendered back to the interface.
The operational impact of this vulnerability extends beyond simple script execution as it provides attackers with the ability to escalate privileges, steal session cookies, perform unauthorized actions within the WordPress admin environment, and potentially gain access to sensitive configuration data. Contributors and above roles typically have significant access to plugin settings and content management capabilities, making this vulnerability particularly dangerous when exploited in multi-user environments. The stored XSS nature means that the malicious code can affect multiple users over time, potentially compromising the entire WordPress installation if attackers can leverage the executed scripts to establish persistent access or perform further exploitation. This vulnerability undermines the integrity of the WordPress admin interface and can lead to complete compromise of the affected site's security posture, especially when combined with other exploitation techniques.
Mitigation strategies for CVE-2025-13153 should prioritize immediate plugin updates to version 4.9.0 or later where the vulnerability has been addressed through proper input validation and output escaping mechanisms. System administrators should implement role-based access controls to minimize the number of users with contributor privileges and above, particularly in environments where sensitive data is managed. Regular security audits of WordPress plugins should include verification of input sanitization practices and output escaping routines to prevent similar vulnerabilities from emerging. The implementation of content security policies can provide additional protection against XSS attacks by restricting script execution within the dashboard environment. Organizations should also consider implementing web application firewalls to detect and block suspicious script injection attempts, while maintaining comprehensive monitoring of dashboard access logs to identify potential exploitation attempts. This vulnerability demonstrates the critical importance of proper input validation and output escaping in web applications, particularly in content management systems where user-generated content can be processed and displayed within administrative interfaces.