CVE-2026-27152 LOW

CVE-2026-27152: DIscourse has DM communication-preference bypass when adding members

Vendor Discourse
Product discourse
Weakness CWE-284
Published February 26, 2026
Last update March 3, 2026
View on NVD All CVEs

CVSS base score

1.3/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality —
Integrity —

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U

What the vulnerability does

01Description

Discourse is an open source discussion platform. Prior to versions 2025.12.2, 2026.1.1, and 2026.2.0, DM communication-preference bypass when adding members via `Chat::AddUsersToChannel` — a user could add targets who have blocked/ignored/muted them to an existing DM channel, bypassing per-recipient PM restrictions that are enforced during DM channel creation. Versions 2025.12.2, 2026.1.1, and 2026.2.0 patch the issue. No known workarounds are available.

Key dates

02Disclosure timeline

February 26, 2026 CVE published
March 3, 2026 Record updated