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

CVE-2026-27152

DIscourse has DM communication-preference bypass when adding members PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / product	Versions
discourse / discourse	affected < 2025.12.2; affected >= 2026.1.0-latest, < 2026.1.1; affected >= 2026.2.0-latest, < 2026.2.0

CWE

CWE-284

References

https://github.com/discourse/discourse/security/advisories/GHSA-f8ff-pxg3-7967

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.