The EmbedPress WordPress plugin, which enables embedding PDFs, YouTube videos, Google Docs, and other media, suffers from a stored cross-site scripting vulnerability (CWE-79) identified as CVE-2024-1349. This flaw results from improper neutralization of input during web page generation, specifically due to insufficient sanitization and output escaping of user-supplied shortcode attributes. Authenticated users with contributor or higher privileges can exploit this to inject arbitrary JavaScript that executes in the context of other users viewing the injected content. The vulnerability affects all versions up to 3.9.8. The CVSS 3.1 base score is 6.4, reflecting network attack vector, low attack complexity, low privileges required, no user interaction, and impacts on confidentiality and integrity with scope changed. No vendor patch or official fix information is currently available.

Successful exploitation allows authenticated contributors or higher to inject persistent malicious scripts into pages via plugin shortcodes. These scripts execute in the browsers of users who view the compromised pages, potentially leading to data theft, session hijacking, or other client-side attacks. The impact is limited to confidentiality and integrity with no availability impact. The vulnerability requires authenticated access with contributor-level permissions, reducing the attack surface compared to unauthenticated vulnerabilities.

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 EmbedPress plugin if feasible. Monitor for updates from the vendor and apply patches promptly once available.