bbPress <= 2.6.20 - Unauthenticated Sensitive Information Exposure via Old-Slug and Canonical Redirects
- ID
- WPSEC-2026-1879
- Plugin
- bbPress (bbpress)
- Affected
- all versions before 2.6.21
- Remediation
- Update to 2.6.21 or later.
- CVSS 3.1
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- Weakness
- CWE-200
- Usage
- Plugin Medium · Affected versions Medium among sites WPSec scans, 2026-10-28
- Attack surface
- bbPress on WPSec AttackSurface
- Fix released
- Published
Description
The bbPress plugin for WordPress is vulnerable to Sensitive Information Exposure via old-slug, canonical and 404 permalink-guessing redirects in all versions up to, and including, 2.6.20, due to the restricted-post check on canonical redirects only considering the 'p' query variable, old-slug redirects not checking read access, and permalink guessing only being disabled for fully resolved bbPress routes. This makes it possible for unauthenticated attackers to use the 'page_id', 'attachment_id' or 'subpost_id' parameters, old slugs, or malformed bbPress route URLs to be redirected to the permalinks of topics and replies in private or hidden forums, revealing their slugs and titles.
References
- https://wpsec.com/vuln/WPSEC-2026-1879/
- https://plugins.svn.wordpress.org/bbpress/tags/2.6.21/
- https://wordpress.org/plugins/bbpress/
Published by WPSec. Provided as is, without warranty. Corrections: contact us.
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