CVE-2026-33426

Discourse is an open-source discussion platform. Prior to versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2, users with tag-editing permissions could edit and create synonyms for tags hidden in restricted tag groups, even if they lacked visibility into those tags. Versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2 contain a patch. No known workarounds are available.

CVSS v3 3.5 LOW

3.5^/10

CVSS v3 : LOW

Vector :

Exploitability : 0.9 / Impact : 2.5

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required HIGH

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/discourse/discourse/security/advisories/GHSA-2289-4m46-2hxh	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, 19:56

Type	Values Removed	Values Added
First Time		Discourse Discourse discourse
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-2289-4m46-2hxh -~~	() https://github.com/discourse/discourse/security/advisories/GHSA-2289-4m46-2hxh - Vendor Advisory

21 Mar 2026, 00:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-03-21 00:16

Updated : 2026-03-24 19:56

NVD link : CVE-2026-33426

Mitre link : CVE-2026-33426

CVE.ORG link : CVE-2026-33426

JSON object : View

Products Affected

discourse

discourse

CWE

CWE-862

Missing Authorization

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