Resource exhaustion in Discourse - CVE-2024-27100
Published: March 15, 2024 / Updated: July 1, 2026
Vulnerability identifier: #VU136097
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2024-27100
CWE-ID: CWE-400
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Civilized Discourse Construction Kit, Inc.
Affected software:
Discourse
Discourse
Detailed vulnerability description
The vulnerability allows a remote user to cause a denial of service.
The vulnerability exists due to uncontrolled resource consumption in the user suspension, user silencing, and CSV export endpoints when handling oversized parameters. A remote user can send crafted requests with large parameter values to cause a denial of service.
In multisite deployments, exploitation may be performed by a staff member on another site in the same cluster.
How to mitigate CVE-2024-27100
Install security update from vendor's website.