CVE-2025-31093 identifies a DOM-based Cross-site Scripting (XSS) vulnerability in the redpixelstudios RPS Include Content plugin, specifically versions up to and including 1.2.1. This vulnerability stems from improper neutralization of user-supplied input during the generation of web pages, allowing malicious scripts to be injected into the Document Object Model (DOM) of affected web pages. Unlike traditional reflected or stored XSS, DOM-based XSS occurs entirely on the client side, where the malicious payload manipulates the DOM environment in the victim’s browser, bypassing server-side sanitization. The plugin’s function to include content dynamically appears to inadequately sanitize or encode input parameters, enabling attackers to craft URLs or content that execute arbitrary JavaScript in the context of the victim’s browser session. This can lead to theft of sensitive information such as cookies or session tokens, unauthorized actions performed on behalf of the user, or redirection to malicious sites. The vulnerability does not require authentication, increasing its risk profile, but exploitation requires user interaction, such as clicking a malicious link. Currently, no public exploits or patches are available, but the vulnerability is publicly disclosed and assigned CVE-2025-31093. The affected plugin is commonly used in web content management environments, which may be integrated into various websites globally. The lack of a CVSS score necessitates a severity assessment based on impact and exploitability factors.

The primary impact of CVE-2025-31093 is the compromise of user confidentiality and integrity through execution of arbitrary scripts in the victim’s browser. This can result in session hijacking, theft of authentication tokens, defacement, or unauthorized actions performed with the victim’s privileges. For organizations, this can lead to data breaches, loss of customer trust, and potential regulatory penalties if sensitive data is exposed. The availability impact is generally low unless the injected scripts perform denial-of-service actions. Since the vulnerability requires user interaction but no authentication, it can be exploited broadly via phishing or malicious links. Websites using the vulnerable plugin may become vectors for widespread attacks, especially if integrated into high-traffic or sensitive environments. The absence of known exploits in the wild currently limits immediate risk, but the public disclosure increases the likelihood of future exploitation attempts. Organizations relying on this plugin or similar content inclusion mechanisms should prioritize remediation to prevent exploitation.

1. Monitor for and apply official patches or updates from redpixelstudios as soon as they become available to address CVE-2025-31093. 2. Implement strict input validation and output encoding on all user-supplied data used in dynamic content inclusion to prevent injection of malicious scripts. 3. Employ Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts and reduce the impact of potential XSS attacks. 4. Conduct thorough code reviews and security testing focusing on client-side DOM manipulation and input handling within the plugin and related components. 5. Educate users and administrators about the risks of clicking untrusted links and encourage safe browsing practices to reduce the risk of social engineering exploitation. 6. Consider deploying web application firewalls (WAFs) with rules designed to detect and block XSS attack patterns targeting the affected plugin. 7. If immediate patching is not possible, disable or restrict the use of the vulnerable plugin functionality to limit exposure.