The Nautic Pages plugin for WordPress suffers from a stored cross-site scripting vulnerability (CWE-79) in its 'np_marinetraffic_map' shortcode. This vulnerability is due to improper neutralization of user-supplied input, specifically a lack of adequate sanitization and escaping of attributes. Authenticated attackers with contributor-level privileges or higher can exploit this flaw to inject arbitrary JavaScript code into pages, which executes when other users access these pages. This can compromise confidentiality and integrity of user sessions. The CVSS 3.1 base score is 6.4, reflecting network attack vector, low attack complexity, required privileges, no user interaction, and impact on confidentiality and integrity but not availability. The vulnerability affects all versions up to and including 2.0. No patch or official fix has been documented yet.

Successful exploitation allows an authenticated user with contributor or higher privileges to inject persistent malicious scripts into pages via the vulnerable shortcode. These scripts execute in the context of any user viewing the page, potentially leading to theft of sensitive information such as cookies or session tokens, and unauthorized actions performed on behalf of users. The impact affects confidentiality and integrity but does not affect availability. There are no known active exploits in the wild at this time.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict contributor-level access to trusted users only and consider disabling or removing the Nautic Pages plugin if possible. Monitor plugin updates from the vendor for a security patch addressing this vulnerability.