Description
The bbp Style Pack plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions up to, and including, 6.4.5 via the Topic Form Additional Fields feature. This is due to insufficient input sanitization in bsp_topic_fields_form_save() (which writes $_POST['bsp_topic_fields_label{n}'] directly to post meta via update_post_meta() with no filtering) and missing output escaping in bsp_topic_content_append_topic_fields() (which concatenates the stored meta value into an HTML <span> and echoes it via apply_filters/echo without esc_html()). This makes it possible for authenticated attackers, with Subscriber-level access and above (who have bbPress topic-creation privileges), to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page, including unauthenticated visitors.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
robin-w bbp style pack
Default version status: unaffected
0 to ≤ 6.4.5affected
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/f898ab34-2d63-458d-b19b-4e2b6f4a0f3b?source=cve ↗
- https://plugins.trac.wordpress.org/browser/bbp-style-pack/tags/6.4.5/includes/functions_topic_fields.php#L146 ↗
- https://plugins.trac.wordpress.org/browser/bbp-style-pack/tags/6.4.5/includes/functions_topic_fields.php#L235 ↗
- https://plugins.trac.wordpress.org/changeset?reponame=&old=3601461%40bbp-style-pack&new=3601461%40bbp-style-pack ↗