CVE-2025-22342 in WP Simple Sitemap Plugin
Summary
by MITRE • 01/07/2025
Cross-Site Request Forgery (CSRF) vulnerability in Jens Törnell WP Simple Sitemap allows Stored XSS.This issue affects WP Simple Sitemap: from n/a through 0.2.
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Analysis
by VulDB Data Team • 02/15/2025
This vulnerability represents a critical security flaw in the WP Simple Sitemap plugin for WordPress systems, specifically impacting versions ranging from the initial release through version 0.2. The vulnerability stems from a cross-site request forgery weakness that enables attackers to execute stored cross-site scripting attacks against unsuspecting users. The flaw occurs when the plugin fails to properly validate and sanitize user input within its administrative interfaces, creating an environment where malicious actors can inject persistent malicious scripts that execute whenever legitimate users access affected pages. This particular vulnerability demonstrates how CSRF protection mechanisms can be bypassed to enable more sophisticated attack vectors, fundamentally compromising the integrity of the WordPress site's user session management and data handling processes.
The technical implementation of this vulnerability involves the exploitation of insufficient input validation within the plugin's administrative forms and settings pages. When administrators or users with appropriate privileges interact with the sitemap configuration interfaces, the system fails to implement proper anti-CSRF tokens or other validation mechanisms that would prevent unauthorized modifications to the plugin's settings. This weakness allows attackers to craft malicious requests that, when executed by authenticated users, store malicious JavaScript payloads within the plugin's data structures. The stored XSS component manifests when these malicious scripts are subsequently rendered in the plugin's output or administrative interfaces, enabling attackers to execute arbitrary code within the victim's browser context. This vulnerability directly aligns with CWE-352, which categorizes cross-site request forgery issues, and CWE-79, which addresses cross-site scripting vulnerabilities, demonstrating how these two weaknesses can compound to create more severe security implications.
The operational impact of this vulnerability extends beyond simple data theft or defacement, as it provides attackers with persistent access to authenticated user sessions and potentially elevated privileges within the WordPress environment. Attackers can leverage this vulnerability to establish backdoors, modify plugin configurations, steal administrative credentials, or manipulate content management systems to serve malicious payloads to other users. The stored nature of the XSS attack means that the malicious code remains active even after the initial exploitation attempt, continuously affecting any user who interacts with the compromised plugin functionality. This persistent threat vector significantly increases the attack surface and potential damage scope, as the vulnerability can be exploited repeatedly without requiring additional user interaction beyond the initial compromise. The impact is particularly severe in environments where administrators regularly use the affected plugin, as the attack can be executed with elevated privileges and potentially lead to complete system compromise.
Mitigation strategies for this vulnerability should focus on immediate plugin updates to versions that address the CSRF and XSS weaknesses, though given the limited version range mentioned, administrators should prioritize upgrading to the latest available stable release. Implementing proper input validation and output escaping mechanisms within the plugin's codebase is essential, requiring the addition of anti-CSRF tokens to all administrative forms and ensuring that all user-provided data is properly sanitized before storage or rendering. Network-level protections such as web application firewalls can provide additional defense-in-depth measures, though these should not be relied upon as primary solutions. Organizations should also implement regular security auditing of their WordPress plugins, particularly those with administrative interfaces, and establish monitoring protocols to detect unauthorized modifications to plugin configurations. The vulnerability highlights the importance of following security best practices such as those outlined in the OWASP Top Ten and NIST Cybersecurity Framework, emphasizing the need for comprehensive security testing including both automated scanning and manual penetration testing of web applications. Additionally, implementing principle of least privilege access controls and regular security training for administrators can help reduce the potential impact of such vulnerabilities by limiting the scope of damage that can be achieved through successful exploitation.