CVE-2026-116366
Unauthenticated RCE vulnerability against ClickHouse Server
Description
An issue has been discovered in ClickHouse Server that, under certain conditions, could allow an unauthenticated user with network access to execute arbitrary code on the ClickHouse Server.
INFO
Published Date :
Oct. 30, 2026, 11:17 a.m.
Last Modified :
Oct. 30, 2026, 11:17 a.m.
Remotely Exploit :
Yes !
Source :
cb7ba516-3b07-4c98-b0c2-715220f1a8f6
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 4.0 | CRITICAL | cb7ba516-3b07-4c98-b0c2-715220f1a8f6 | ||||
| CVSS 4.0 | CRITICAL | cb7ba516-3b07-4c98-b0c2-715220f1a8f6 |
Solution
- Update ClickHouse Server to the latest version.
- Verify server configuration for security.
- Restrict network access to authorized sources.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-116366.
| URL | Resource |
|---|---|
| https://clickhouse.com/docs/resources/changelogs/security-changelog | |
| https://github.com/ClickHouse/ClickHouse/blob/master/SECURITY.md |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-116366 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-116366
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-116366 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-116366 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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New CVE Received by cb7ba516-3b07-4c98-b0c2-715220f1a8f6
Oct. 30, 2026
Action Type Old Value New Value Added Description An issue has been discovered in ClickHouse Server that, under certain conditions, could allow an unauthenticated user with network access to execute arbitrary code on the ClickHouse Server. Added CVSS V4.0 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 Added CWE CWE-190 Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/116xxx/CVE-2026-116366.json">CVE-2026-116366</a> Added Reference https://clickhouse.com/docs/resources/changelogs/security-changelog Added Reference https://github.com/ClickHouse/ClickHouse/blob/master/SECURITY.md