LikeBtn vulnerabilities and threats

The Like Button Rating ♥ LikeBtn plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'HTTP_CLIENT_IP (Client-IP header)' parameter in all versions up to, and including, 2.6.64 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. Successful exploitation requires the site administrator to have disabled the default 'Be GDPR compliant' option, which would otherwise hash stored IP values and neutralize the payload. Successful exploitation additionally requires an action by an administrator — the attacker cannot trigger the vulnerability on their own.

CVE-2026-78285 is a high-severity SQL Injection vulnerability affecting Like Button Rating versions up to and including 2.6.61. It allows an attacker with limited privileges to execute unauthorized SQL commands, potentially leading to high confidentiality impact and limited availability impact. No official patch or remediation guidance has been provided yet.

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in LikeBtn Like Button Rating likebtn-like-button.This issue affects Like Button Rating: from n/a through <= 2.6.53.