CVE-2026-116366

Unauthenticated RCE vulnerability against ClickHouse Server

State: Published
Severity: 9.5 Critical
Published: Oct 30, 2026
Updated: Oct 30, 2026
Reserved: Oct 26, 2026

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.

Scores

CVSS	Score	Vector	Source
4.0	9.5 Critical	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	ClickHouse

Weaknesses

CWE-190 Integer overflow or wraparound

Affected Products

Product	Versions
ClickHouseClickHouse	26.3 to before 26.3.62.3-ltsAffected 26.8 to before 26.8.36.3-ltsAffected 26.9 to before 26.9.27.3-stableAffected 26.10 to before 26.10.3.7-stableAffected

References

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