CVSS 3.1 Score 7.0 of 10 (high)


Published Dec 20, 2023
Updated: Jan 4, 2024
CWE ID 122
CWE ID 787


CVE-2023-47118 is a heap buffer overflow vulnerability affecting ClickHouse server, an open-source column-oriented database management system. The vulnerability allows an attacker to crash the ClickHouse server process by sending a specially crafted payload to the native interface on port 9000/tcp. The issue can also be triggered via HTTP protocol, but requires a valid credential. The vulnerability has been fixed in versions,,, and of ClickHouse server. This vulnerability poses a high risk to organizations as it can be exploited remotely without authentication and can lead to denial of service attacks on ClickHouse servers handling real-time analytical data reports.

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