CVE-2026-33428

Discourse is an open-source discussion platform. Prior to versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2, a non-staff user with elevated group membership could access deleted posts belonging to any user due to an overly broad authorization check on the deleted posts index endpoint. Versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2 contain a patch. No known workarounds are available.

CVSS v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/discourse/discourse/security/advisories/GHSA-frcw-p4mc-x6mp	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, 19:41

Type	Values Removed	Values Added
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 6.5
References	~~() https://github.com/discourse/discourse/security/advisories/GHSA-frcw-p4mc-x6mp -~~	() https://github.com/discourse/discourse/security/advisories/GHSA-frcw-p4mc-x6mp - Vendor Advisory
CPE		cpe:2.3:a:discourse:discourse:2026.3.0::::latest::: cpe:2.3:a:discourse:discourse::::::::
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 19:41

NVD link : CVE-2026-33428

Mitre link : CVE-2026-33428

CVE.ORG link : CVE-2026-33428

JSON object : View

Products Affected

discourse

discourse

CWE

CWE-863

Incorrect Authorization

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