The Post Like Dislike plugin for WordPress suffers from a reflected cross-site scripting vulnerability due to insufficient input sanitization and output escaping of the $_SERVER['PHP_SELF'] variable. This flaw allows unauthenticated attackers to inject malicious scripts that execute in the context of a victim's browser when they click a crafted link. The vulnerability affects all versions up to 1.0. It has a CVSS 3.1 base score of 6.1, reflecting network attack vector, low attack complexity, no privileges required, user interaction required, and partial impact on confidentiality and integrity. No patch or official fix is currently available, and no exploits are known in the wild.

Successful exploitation can lead to execution of arbitrary scripts in the context of the victim's browser, potentially allowing theft of sensitive information or session tokens. The impact is limited to confidentiality and integrity with no availability impact. Since the attack requires user interaction and no privileges, the risk is moderate.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is released, users should avoid clicking suspicious links related to the affected plugin. Monitoring for updates from the cuvixsystem vendor is recommended to apply an official fix once available.