CVE-2026-33424

Discourse is an open-source discussion platform. Prior to versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2, an attacker can grant access to a private message topic through invites even after they lose access to that PM. Versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2 contain a patch. No known workarounds are available.

CVSS v3 5.9 MEDIUM

5.9^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 0.4 / Impact : 5.5

Attack Vector ADJACENT_NETWORK

Attack Complexity HIGH

Privileges Required HIGH

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://github.com/discourse/discourse/security/advisories/GHSA-hgcp-p7hq-cwxw	Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:discourse:discourse::::::::
	cpe:2.3:a:discourse:discourse::::::::
	cpe:2.3:a:discourse:discourse:2026.3.0::::latest:::

History

24 Mar 2026, 19:38

Type	Values Removed	Values Added
CPE		cpe:2.3:a:discourse:discourse:2026.3.0::::latest::: cpe:2.3:a:discourse:discourse::::::::
References	~~() https://github.com/discourse/discourse/security/advisories/GHSA-hgcp-p7hq-cwxw -~~	() https://github.com/discourse/discourse/security/advisories/GHSA-hgcp-p7hq-cwxw - Vendor Advisory
First Time		Discourse Discourse discourse

21 Mar 2026, 00:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-03-21 00:16

Updated : 2026-03-24 19:38

NVD link : CVE-2026-33424

Mitre link : CVE-2026-33424

CVE.ORG link : CVE-2026-33424

JSON object : View

Products Affected

discourse

discourse

CWE

CWE-863

Incorrect Authorization

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