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Discourse Restriction Bypass Vulnerability Allowing Post Action Count Disclosure to Non-Privileged Users

Vulnerability

A restriction bypass vulnerability has been identified in Discourse, an open-source discussion platform. This issue affects versions prior to 2026.3.0-latest.1, 2026.2.1, and 2026.1.2. The vulnerability allows restricted post action counts to be disclosed to non-privileged users through a carefully crafted request.

Impact

Exploitation of this vulnerability leads to unauthorized disclosure of restricted post action counts to non-privileged users.

Remediation

Users can upgrade to Discourse versions 2026.3.0-latest.1, 2026.2.1, or 2026.1.2 to address this vulnerability.

Added: Mar 19, 2026, 10:56 PM
Updated: Mar 19, 2026, 10:56 PM

Vulnerability Rating

Custom Algorithm
spread
2.4
impact
0.6
exploitability
4.7
remediation
7.7
relevance
4.1
threat
0.0
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.