Multicollab WordPress Plugin Missing Authorization Vulnerability in Commenting Feature

Vulnerability

A vulnerability exists in the Multicollab: Content Team Collaboration and Editorial Workflow plugin for WordPress, in all versions through 5.2. The issue arises from a missing capability check in the 'cf_add_comment' function, allowing authenticated attackers with Subscriber-level access and above to add comments to any collaboration. This unauthorized data modification could disrupt editorial workflows or collaboration processes.

Impact

Exploitation of this vulnerability allows for unauthorized addition of comments to collaborations, potentially disrupting content management and editorial workflows.

Remediation

Users are advised to update the plugin to version 5.3 or a newer patched version.

Added: May 16, 2026, 1:20 PM
Updated: May 16, 2026, 1:20 PM

Vulnerability Rating

Custom Algorithm
spread
0.0
impact
0.6
exploitability
5.9
remediation
0.0
relevance
8.5
threat
3.2
urgency
2.9
incentive
0.0

Our algorithm analyzes dozens of metrics to generate these 8 key vulnerability categories, which are then combined to calculate the overall risk score.