Vulnerabilities / Co-Authors Plus / WPSEC-2026-2743
Co-Authors Plus <= 4.2.1 - Unauthenticated Sensitive Information Exposure via Author Private Post Counts
Medium 5.3
CWE-200Fixed in 4.2.2
- ID
- WPSEC-2026-2743
- Plugin
- Co-Authors Plus (co-authors-plus)
- Affected
- all versions before 4.2.2
- Remediation
- Update to 4.2.2 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, 2026-11-08
- Attack surface
- Co-Authors Plus on WPSec AttackSurface
- Fix released
- Published
Description
The Co-Authors Plus plugin for WordPress is vulnerable to Sensitive Information Exposure via the count_user_posts() filter in all versions up to, and including, 4.2.1, due to author post counts including private posts whoever is viewing. Core's REST API users route lets anyone read a user who has a non-zero post count. This makes it possible for unauthenticated attackers to read the profiles of users who only have private posts, and to learn that those private posts exist.
References
- https://wpsec.com/vuln/WPSEC-2026-2743/
- https://plugins.svn.wordpress.org/co-authors-plus/tags/4.2.2/
- https://wordpress.org/plugins/co-authors-plus/
Published by WPSec. Provided as is, without warranty. Corrections: contact us.
This advisory as JSON or Markdown · All advisories: JSON, RSS