CVE-2026-44786

Description

Discourse is an open-source discussion platform. From versions 2026.1.0-latest to before 2026.1.4, 2026.3.0-latest to before 2026.3.1, and 2026.4.0-latest to before 2026.4.1, chat events for public category channels are published to MessageBus without permission scoping, so any MessageBus subscriber without chat enabled could receive chat message payloads in real time. This issue has been patched in versions 2026.1.4, 2026.3.1, 2026.4.1, and 2026.5.0-latest.1.

PUBLISHED Reserved 2026-05-07 | Published 2026-06-12 | Updated 2026-06-15 | Assigner GitHub_M

Problem types

CWE-200: Exposure of Sensitive Information to an Unauthorized Actor

Product status

References

github.com/...course/security/advisories/GHSA-j7wq-rf5c-8783

cve.org (CVE-2026-44786)

nvd.nist.gov (CVE-2026-44786)

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