CVE-2025-26769 is a stored cross-site scripting (XSS) vulnerability identified in Webilia Inc.'s Vertex Addons for Elementor plugin, a popular extension for the Elementor page builder on WordPress. The vulnerability stems from improper neutralization of user-supplied input during the generation of web pages, allowing malicious scripts to be injected and stored persistently within the website's content. When other users or administrators visit the affected pages, the malicious scripts execute in their browsers under the context of the vulnerable site. This can lead to a range of attacks including session hijacking, credential theft, unauthorized actions performed on behalf of users, and distribution of malware. The vulnerability affects all versions of Vertex Addons for Elementor up to and including version 1.2.0. No CVSS score has been assigned yet, and no public exploits have been reported. The flaw does not require authentication or user interaction beyond visiting a compromised page, making it relatively easy to exploit. The plugin is widely used in WordPress environments, particularly in sites leveraging Elementor for page building, which increases the potential attack surface. The vulnerability was reserved on February 14, 2025, and published on February 17, 2025, by Patchstack. No official patches or updates have been linked yet, indicating that users should monitor vendor communications closely for remediation. Interim mitigations such as strict input validation, output encoding, and deployment of Content Security Policy (CSP) headers can reduce risk until patches are available.

The impact of CVE-2025-26769 is significant for organizations using the Vertex Addons for Elementor plugin. Stored XSS vulnerabilities allow attackers to inject malicious scripts that execute in the browsers of site visitors and administrators, potentially leading to credential theft, session hijacking, unauthorized actions, and malware distribution. This can compromise the confidentiality and integrity of user data and the affected web application. For organizations, this can result in data breaches, reputational damage, loss of customer trust, and potential regulatory penalties. Since the vulnerability is in a widely used WordPress plugin, the scope of affected systems is broad, encompassing small businesses, e-commerce sites, and enterprise web portals that rely on Elementor for content management. The ease of exploitation without authentication or user interaction increases the likelihood of attacks. Additionally, compromised sites can be used as platforms for further attacks against visitors or internal networks. The absence of known exploits in the wild currently provides a window for proactive mitigation, but the risk of future exploitation remains high.

Organizations should immediately inventory their WordPress installations to identify the use of Vertex Addons for Elementor and verify the plugin version. Until an official patch is released, implement strict input validation and sanitization on all user inputs related to the plugin's functionality to prevent malicious script injection. Employ output encoding techniques to neutralize any potentially harmful content before rendering it in browsers. Deploy a robust Content Security Policy (CSP) that restricts the execution of inline scripts and limits sources of executable code. Regularly monitor security advisories from Webilia Inc. and Patchstack for updates and apply patches promptly once available. Additionally, consider using Web Application Firewalls (WAFs) with rules designed to detect and block XSS payloads targeting this plugin. Educate site administrators and users about the risks of XSS and encourage the use of strong authentication mechanisms and session management practices to mitigate the impact of potential exploits. Finally, conduct thorough security testing and code reviews of customizations involving the plugin to identify and remediate similar vulnerabilities.