Vulnerability Report

CVE-2026-32618

Title: Channel Membership Inference in Discourse

Information Disclosure

Proof Of Concept

No public PoC currently indexed for CVE-2026-32618.

CWE Category CWE-200

Published Date Mar 31, 2026

Modified Date Apr 09, 2026

Exploit Status Not Found

Score 4.3 CVSS v3.1

Exploit Probability (EPSS)

0.05%

Vulnerability Summary

CVE-2026-32618: Discourse is an open-source discussion platform. From versions 2026.1.0-latest to before 2026.1.3, 2026.2.0-latest to before 2026.2.2, and 2026.3.0-latest to before 2026.3.0, there is possible channel membership inference from chat user search without authorization. This issue has been patched in versions 2026.1.3, 2026.2.2, and 2026.3.0.

Impacted Vendors

discourse 1

Reference Links

https://github.com/discourse/discourse/commit/81fd89e744058e509412158e5e6ac90c856ade64 https://github.com/discourse/discourse/security/advisories/GHSA-pc8p-w2m7-hgf3

CVSS v3.1

Source Entity [email protected]

Severity MEDIUM

4.3

Attack Vector

NETWORK

Complexity

LOW

Privileges

N/A

Interaction

NONE

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

UNCHANGED

RAW VECTOR CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2026-32618 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

April 09, 2026 MODIFIED

Vulnerability data updated via NVD.

April 09, 2026 MODIFIED

Vulnerability data updated via NVD.

April 01, 2026 MODIFIED

Vulnerability data updated via NVD.

March 31, 2026 MODIFIED

Vulnerability data updated via NVD.

Attack Vector Matrix

Access Vector NETWORK

Complexity LOW

Privileges N/A

Interaction NONE

CVSS Vector String


                                    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Affected Stack

No specific products linked.