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CVE-2021-43850

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CVE-2021-43850

Published: Jan 4, 2022

Modified: Apr 22, 2025

PUBLISHED

CVSS v3.1

6.8

MEDIUM

Description

Discourse is an open source platform for community discussion. In affected versions admins users can trigger a Denial of Service attack via the `/message-bus/_diagnostics` path. The impact of this vulnerability is greater on multisite Discourse instances (where multiple forums are served from a single application server) where any admin user on any of the forums are able to visit the `/message-bus/_diagnostics` path. The problem has been patched. Please upgrade to 2.8.0.beta10 or 2.7.12. No workarounds for this issue exist.

VendorProductVersions

discourse

discourse

affected
< 2.7.12
affected
>= 2.8.0.beta, < 2.8.0.beta10

Weaknesses (CWE)

CWE-20

CVSS v3.1 Details

CVSS v3.1 Vector

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

Required

Scope

Changed

Confidentiality

None

Integrity

None

Availability

High

References

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