---
title: "CVE-2026-116366: ClickHouse Server - Remote Code Execution"
description: "ClickHouse Server contains a remote code execution vulnerability caused by improper access control, letting unauthenticated users with network access execute arbitrary code remotely, exploit requires network access."
url: https://panop.io/threat-heartbeat/CVE-2026-116366/
---

# CVE-2026-116366 ClickHouse Server - Remote Code Execution

ClickHouse Server contains a remote code execution vulnerability caused by improper access control, letting unauthenticated users with network access execute arbitrary code remotely, exploit requires network access.

CVSS base score 9.5 /10

Critical

CISA KEV

Not listed

Public exploit

Proof of concept available

Authentication

Not required

EPSS

0.40% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-116366)

## Details

Type

Remote Code Execution

Impact

Remote Code Execution

CVSS vector

CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Published

30 October 2026

Updated

1 November 2026

Weakness

[CWE-190](https://cwe.mitre.org/data/definitions/190.html)

## Vendor fix

Update to the latest version of ClickHouse Server.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-116366](https://nvd.nist.gov/vuln/detail/CVE-2026-116366)
- [https://clickhouse.com/docs/resources/changelogs/security-changelog](https://clickhouse.com/docs/resources/changelogs/security-changelog)
- [https://github.com/ClickHouse/ClickHouse/blob/master/SECURITY.md](https://github.com/ClickHouse/ClickHouse/blob/master/SECURITY.md)

[← All CVEs](https://panop.io/threat-heartbeat/)

## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

Panop answers these inside your environment, for this CVE and every other finding.

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