The Auto iFrame plugin for WordPress suffers from a stored cross-site scripting vulnerability due to improper neutralization of input during web page generation. Specifically, the 'tag' parameter is not properly sanitized or escaped, allowing authenticated users with Author-level privileges or above to inject malicious scripts. These scripts execute in the context of users who visit the compromised pages, potentially leading to information disclosure or session hijacking. The vulnerability affects all versions up to 1.7. There is no vendor-provided patch or advisory available at this time, and no known active exploitation has been reported.

Successful exploitation allows an authenticated user with Author-level access or higher to inject arbitrary JavaScript code into pages generated by the plugin. This can lead to client-side script execution in the browsers of users who visit the injected pages, potentially resulting in information disclosure or user session compromise. The vulnerability does not impact availability and requires authentication with a certain privilege level, limiting its scope.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict Author-level access to trusted users only and consider disabling or removing the Auto iFrame plugin if feasible. Monitor for updates from the plugin vendor or WordPress security channels for a patch or official mitigation instructions.