The Image Alt Text Manager plugin for WordPress suffers from a stored cross-site scripting vulnerability (CWE-79) due to improper neutralization of input during web page generation. Specifically, the plugin fails to adequately sanitize and escape the post title when dynamically creating image alt and title attributes via a DOM parser. This flaw allows authenticated attackers with Author-level privileges or higher to inject malicious scripts that persist in the system and execute in the context of users viewing the compromised pages. The vulnerability affects all versions up to 1.8.2 and has a CVSS 3.1 base score of 6.4 (AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N). No known exploits are reported in the wild, and no patch or vendor advisory is currently provided.

Successful exploitation allows an authenticated user with Author-level access or above to inject persistent malicious scripts into pages via the post title. These scripts execute in the browsers of users who view the infected pages, potentially leading to limited confidentiality and integrity impacts such as session hijacking or unauthorized actions within the affected site context. Availability is not impacted. The vulnerability requires authentication and low attack complexity but can affect all users who access the injected content.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, limit Author-level access to trusted users only and consider disabling or removing the vulnerable plugin to prevent exploitation. Monitor for plugin updates from the vendor that address this vulnerability.