CVE-2026-12098
Description
The PowerPress Podcasting plugin by Blubrry plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'embed' Episode Meta Field in all versions up to, and including, 11.16.8 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with author-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The embed value is stored via update_post_meta() rather than through WordPress core's post content pipeline, meaning kses-on-save filtering is never applied — even for Author-role users who would otherwise lack unfiltered_html — making this path unprotected by WordPress's standard role-based XSS mitigations.
Summary dbcve.org
The PowerPress Podcasting plugin for WordPress has a Stored XSS vulnerability in the 'embed' Episode Meta Field. The issue stems from update_post_meta() bypassing WordPress's kses-on-save filtering, allowing Author-level users (who normally lack unfiltered_html capability) to inject arbitrary JavaScript via insufficient input sanitization and missing output escaping.
Mitigation
Update PowerPress to the latest version (11.16.9 or later) which includes proper input sanitization for the embed field and output escaping when rendering. If immediate update is not possible, disable the embed feature or restrict access to episode editing.