Security Alert Summary
The Multicollab: Content Team Collaboration and Editorial Workflow plugin for WordPress contains a missing capability check in the cf_add_comment function in all versions up to and including 5.2. This issue allows authenticated users with Subscriber-level access or higher to add comments to arbitrary collaborations, resulting in an integrity impact to collaboration data.
CVE Details
- CVE ID: CVE-2025-4202
- Affected component: Multicollab: Content Team Collaboration and Editorial Workflow plugin for WordPress
- Affected versions: All versions up to and including 5.2
- Published: May 16, 2026 at 1:16:16 PM UTC
- Last modified: May 16, 2026 at 1:16:16 PM UTC
- CVSS v3.1: Base Score 4.3, MEDIUM — Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
- Authentication / privileges / user interaction: Requires an authenticated user with low privileges (Subscriber-level access or higher). No user interaction required.
- Impact (C/I/A): Confidentiality: None; Integrity: Low; Availability: None
- Weakness: CWE-862 (Missing Authorization)
Technical Details
The vulnerability is caused by a missing capability check in the plugin function cf_add_comment. Because the function does not enforce the appropriate authorization, authenticated users with Subscriber-level access or higher can invoke the comment-adding behavior and create comments on arbitrary collaboration objects provided by the plugin.
The primary technical impact is modification of collaboration data (integrity). The issue does not indicate a direct confidentiality or availability impact in the provided data. The problem exists in all versions up to and including 5.2 due to the absent capability verification in the named function.
How This Could Impact Your Website
Consider a small editorial team that uses Multicollab: the site owner configures the plugin for workflow notes, editors and authors collaborate internally, and external contractors or contributors are given Subscriber or Contributor accounts. An authenticated external contributor could add comments to collaboration threads they should not control, which may alter editorial notes, workflow status indicators, or metadata used by staff to manage publishing.
While the CVSS data indicates no direct confidentiality impact, added comments or manipulated collaboration entries could surface internal details (for example, if email addresses or internal notes are present in collaboration content), increasing the risk of targeted phishing or social engineering against staff.
If youre unsure whether your site is affected or how to assess your current user roles and plugins, it may be worth having a professional review your setup.
Recommended Actions
- Update the affected plugin as soon as a patched version is available.
- Review and reduce unnecessary user roles, especially Contributor and Subscriber accounts with write access to collaboration features.
- Enforce strong passwords and two-factor authentication for editors and administrators.
- Remove unused or unmaintained plugins.
- Monitor site activity and collaboration logs for unusual comment creation or unexpected changes to workflow entries.
If youd like help reviewing your plugins, user roles, or overall WordPress security posture, our team at Freshy is happy to help.
