CVE-2025-4579 is a stored cross-site scripting vulnerability in the dyland WP Content Security Plugin for WordPress, affecting all versions up to and including 2.3. The vulnerability results from insufficient input sanitization and output escaping of the blocked-uri and effective-directive parameters. An unauthenticated attacker can exploit this to inject arbitrary web scripts that execute in the context of users visiting the injected pages. The CVSS 3.1 base score is 7.2, reflecting network attack vector, low attack complexity, no privileges or user interaction required, and impacts on confidentiality and integrity with scope change.

Successful exploitation allows an unauthenticated attacker to execute arbitrary scripts in the context of users visiting the affected pages, potentially leading to theft of sensitive information, session hijacking, or other malicious actions impacting confidentiality and integrity. There is no impact on availability. No known exploits are reported in the wild.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, users should consider disabling the plugin or restricting access to affected parameters if possible. Monitor vendor channels for updates and apply patches promptly once released.