CVE-2026-33424 MEDIUM

CVE-2026-33424: PM access granted through invites after access revocation

Vendor Discourse
Product discourse
Weakness CWE-863 · Incorrect authorization
Published March 20, 2026
Last update March 25, 2026
View on NVD All CVEs

CVSS base score

5.9/10
Attack vector Adjacent
Attack complexity High
Privileges required High
User interaction Required
Confidentiality High
Integrity High

CVSS vector

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

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

March 20, 2026 CVE published
March 25, 2026 Record updated