CVE-2025-52764

Vulnerability

Overview

The flexoslider WordPress plugin, up to and including version 1.0004, contains a reflected Cross-Site Scripting (XSS) vulnerability due to improper neutralization of user-supplied input during web page generation. This means the plugin fails to sanitize or escape certain input before including it in its output, allowing attacker-controlled data to be interpreted as executable code by the browser [1].

Exploitation

Details

The vulnerability is classified as reflected XSS, meaning the malicious payload is typically delivered through a crafted link or URL that the victim must trigger. Successful exploitation requires user interaction—the attacker must convince a privileged user (such as an administrator) to click a specially crafted link or visit a maliciously prepared page. This can be done via email, social engineering, or by embedding the link on another website. No authentication on the attacker's part is needed beyond crafting the payload [1].

Potential

Impact

If exploited, an attacker can inject arbitrary JavaScript code into the victim's browser session within the context of the WordPress admin or site's frontend. This can lead to session hijacking, forced redirects to malicious sites, defacement, or injection of advertisements and other HTML payloads. The impact is amplified because the victim is often a privileged user, giving the attacker potential access to higher-level administrative functions [1].

Mitigation and

Status

As of the publication date, no official patch from the plugin vendor has been released for versions up to 1.0004. Users are advised to immediately update the plugin if a patched version becomes available. In the meantime, a virtual mitigation rule from Patchstack is available to block attacks until an official fix can be applied. Given the moderate severity and the potential for mass-exploitation campaigns, immediate action is recommended [1].