DM Communication Preference Bypass in Discourse Discussion Platform
CVE-2026-27152

1.3LOW

Key Information:

Vendor

Discourse
Status
Discourse
Vendor
CVE Published:
26 February 2026

What is CVE-2026-27152?

Discourse, an open-source discussion platform, has a vulnerability that allows users to bypass restrictions on direct messaging (DM) communication. Prior to the versions 2025.12.2, 2026.1.1, and 2026.2.0, users could add individuals to existing DM channels, even if those individuals had previously blocked, ignored, or muted them. This breach allows for unauthorized messaging access, challenging user privacy and security. The issue has been addressed in the aforementioned versions, with no known workarounds available.

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Affected Version(s)

discourse < 2025.12.2 < 2025.12.2

discourse >= 2026.1.0-latest, < 2026.1.1 < 2026.1.0-latest, 2026.1.1

discourse >= 2026.2.0-latest, < 2026.2.0 < 2026.2.0-latest, 2026.2.0

References

https://github.com/discourse/discourse/security/advisorie...
x_refsource_CONFIRM

CVSS V4

Score:
1.3
Severity:
LOW
Confidentiality:
Low
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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