CVE-2024-1507 is a stored cross-site scripting (XSS) vulnerability identified in the Prime Slider – Addons For Elementor plugin, a popular WordPress extension used to create sliders such as Revolution, Hero, and Ecommerce sliders. The vulnerability stems from improper neutralization of input during web page generation, specifically in the handling of the 'title_tags' attribute within the Rubix widget. This attribute is not properly sanitized or escaped before being rendered, allowing an authenticated attacker with contributor-level access or higher to inject arbitrary JavaScript code into pages. Because the malicious script is stored persistently, it executes every time a user accesses the affected page, potentially compromising user sessions, stealing cookies, or performing unauthorized actions on behalf of users. The vulnerability does not require user interaction beyond visiting the page, and the attack complexity is low, making exploitation feasible in environments where contributor-level access is granted. The CVSS 3.1 base score of 6.4 reflects a medium severity rating, with an attack vector over the network, low complexity, privileges required, no user interaction, and partial impact on confidentiality and integrity but no impact on availability. No public exploits have been reported yet, but the vulnerability poses a significant risk to websites using the affected plugin versions. The lack of official patches at the time of disclosure necessitates immediate mitigation steps by administrators.

The primary impact of CVE-2024-1507 is the compromise of confidentiality and integrity on affected WordPress sites. Exploitation allows attackers to execute arbitrary scripts in the context of the vulnerable website, which can lead to session hijacking, theft of sensitive user data, defacement of website content, and potential pivoting to further attacks such as privilege escalation or malware distribution. Since the vulnerability requires contributor-level access, the risk is heightened in environments where multiple users have elevated privileges or where account compromise is possible. The persistent nature of the stored XSS means that all visitors to the infected pages are at risk, including administrators and regular users. This can damage the reputation of organizations, lead to data breaches, and cause operational disruptions. Given the widespread use of WordPress and the popularity of Elementor plugins, a large number of websites globally could be affected, especially those that do not promptly update or implement mitigations. The vulnerability does not affect availability directly but can indirectly cause service disruption through defacement or administrative lockout.

1. Immediate mitigation involves restricting contributor-level access to trusted users only, minimizing the risk of malicious script injection. 2. Administrators should monitor and audit user-generated content, especially the 'title_tags' attribute in the Rubix widget, for suspicious or unexpected input. 3. Employ a Web Application Firewall (WAF) with rules designed to detect and block common XSS payloads targeting this plugin. 4. Disable or remove the Prime Slider – Addons For Elementor plugin if it is not essential, or replace it with a more secure alternative. 5. Regularly back up website data to enable recovery in case of compromise. 6. Stay alert for official patches or updates from the vendor and apply them promptly once available. 7. Implement Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts. 8. Educate site administrators and contributors about the risks of injecting untrusted content and enforce strict input validation policies at the application level where possible. 9. Conduct periodic security scans and penetration tests focusing on plugin vulnerabilities and XSS vectors.