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VULNERABILITIES

CVE-2026-33428 Details

Description

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:6.5 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://github.com/discourse/discourse/security/advisories/GHSA-frcw-p4mc-x6mp [email protected]Vendor Advisory

Weakness Enumeration

CWE-IDCWE NameSource
CWE-863Incorrect Authorization[email protected]

Affected Products

ProductVersions
discourse discourse
>= 2026.1.0, < 2026.1.2
>= 2026.2.0, < 2026.2.1
2026.3.0

CPE

  • cpe:2.3:a:discourse:discourse:*:*:*:*:*:*:*:*
  • cpe:2.3:a:discourse:discourse:2026.3.0:*:*:*:latest:*:*:*

Remediation

  • No remediation found in references.

Change History

4 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-33428
NVD Published Date:
Mar 21, 2026
NVD Last Modified:
Jun 17, 2026
Source:
[email protected]
CVE-2026-33428 Details - Not Deferred