CVE-2026-44786

Discourse: Public chat MessageBus broadcasts are not restricted to chat-eligible users

CVSS 7.5 HIGHEPSS 0.3%CWE-200

Vexday Risk Score

21Baixo

Decisão SSVC (CISA)

Track

Sem sinal de exploração → monitorar

CVSS 7.5EPSS 0.3%KEV nãoPoC —Nuclei —Metasploit —Patch —

Ciclo de vida

12 jun 2026Publicada no NVD

Recomendação: Monitorar — sem sinal de exploração no momento.

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.

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

Produtos afetados

discourse · discourse

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Referências

https://github.com/discourse/discourse/security/advisories/GHSA-j7wq-rf5c-8783