Is CVE-2026-28282 actively exploited?

No active exploitation of CVE-2026-28282 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-28282 be exploited remotely?

Yes. CVE-2026-28282 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-28282?

CVE-2026-28282 has a CVSS score of 6.5 (MEDIUM).

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MEDIUM

CVE-2026-28282

CWE-863Published: March 19, 2026· Updated: Mar 23, 2026

6.5

CVSS v3.1

EPSS:0.01%probability of exploitation in 30 daysPercentile:1.9th

Official Description

Discourse is an open-source discussion platform. Versions prior to 2026.3.0-latest.1, 2026.2.1, and 2026.1.2 have a security flaw in the discourse-policy plugin which allowed a user with policy creation permission to gain membership access to any private/restricted groups. Once membership to a private/restricted group has been obtained, the user will be able to read private topics that only the group has access to. Versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2 contain a patch. As a workaround, review all policies for the use of `add-users-to-group` and temporarily remove the attribute from the policy. Alternatively, disable the discourse-policy plugin by disabling the `policy_enabled` site setting.

NVD Source

Technical Analysis

CVE-2026-28282 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), with a CVSS base score of 6.5.