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 ↗

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

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

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