CVE-2025-48291: 
WordPress vulnerability analysis and mitigation

A Cross-site Scripting (XSS) vulnerability was discovered in the WordPress Contest Gallery plugin, identified as CVE-2025-48291. The vulnerability affects versions up to and including 26.0.6 of the Contest Gallery plugin developed by Wasiliy Strecker. The issue was initially reported on March 29, 2025, by researcher Nguyen Tran Tuan Dung and was publicly disclosed on July 11, 2025 (Patchstack).

The vulnerability is classified as an Improper Neutralization of Input During Web Page Generation (CWE-79) issue, which manifests as a Reflected Cross-Site Scripting vulnerability. The CVSS v3.1 base score is 7.1 (High), with the vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L. The vulnerability stems from insufficient input sanitization and output escaping in the plugin (Rapid7).

The vulnerability allows unauthenticated attackers to inject arbitrary web scripts into pages that will execute when users perform specific actions, such as clicking on a malicious link. This could enable attackers to inject malicious scripts, redirects, advertisements, and other HTML payloads that execute when guests visit the affected site (Patchstack).

The vulnerability has been fixed in version 26.0.7 of the Contest Gallery plugin. Users are advised to update to this version or later immediately. For users unable to update immediately, Patchstack has issued a virtual patch to mitigate this issue by blocking potential attacks (Patchstack).