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.
Critical 9.5
CVE-2026-116366
ClickHouse — remote code execution.
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.
WeaknessCWE-190: Integer overflow
Published Updated Source NVD
CVSS 4.0
9.5
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
Exploit chance, 30 days
0.4%
Higher than 33% of all CVEs (EPSS)
Status
No known exploitation
Not in CISA KEV
Patch
Unknown
Check the vendor advisory
What happened
What to do
- 01Check whether you run ClickHouse, and which version.
- 02Follow the vendor advisory for a fix or a workaround.
References
Timeline · UTC
- Published to NVD
- NVD record updated
Also actively exploited