Is CVE-2023-48704 actively exploited?

No active exploitation of CVE-2023-48704 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2023-48704 be exploited remotely?

Yes. CVE-2023-48704 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2023-48704?

CVE-2023-48704 has a CVSS score of 7.5 (HIGH).

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HIGH

CVE-2023-48704

CWE-120Published: December 22, 2023· Updated: Jun 17, 2026

7.5

CVSS v3.1

Official Description

ClickHouse is an open-source column-oriented database management system that allows generating analytical data reports in real-time. A heap buffer overflow issue was discovered in ClickHouse server. An attacker could send a specially crafted payload to the native interface exposed by default on port 9000/tcp, triggering a bug in the decompression logic of Gorilla codec that crashes the ClickHouse server process. This attack does not require authentication. This issue has been addressed in ClickHouse Cloud version 23.9.2.47551 and ClickHouse versions 23.10.5.20, 23.3.18.15, 23.8.8.20, and 23.9.6.20.

NVD Source

Technical Analysis

CVE-2023-48704 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 7.5.