Connect your agent
AdvisoriesCriticalCheck your lockfilePluginHow it worksPricing Connect your agent

CVE record · CVE-2026-116366

Unauthenticated RCE vulnerability against ClickHouse Server

CVSS 9.5 CriticalCriticalEPSS 0.0096 · 61st percentile

Critical, because:

  • CVSS score 9.5: 9.0 or more.

How we decide what’s critical

Published by the CVE Program (CNA: ClickHouse) at 30 Oct 2026, 11:00 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
VendorProductVersions
ClickHouse ClickHouse Package name: ClickHouse https://packages.clickhouse.com/
  • affected 26.3 to before 26.3.62.3-lts custom
  • affected 26.8 to before 26.8.36.3-lts custom
  • affected 26.9 to before 26.9.27.3-stable custom
  • affected 26.10 to before 26.10.3.7-stable custom
Other versions: affected
ClickHouse ClickHouse Cloud Package name: ClickHouse https://console.clickhouse.cloud/
  • affected 25.12 to before 25.12.1.1713 custom
  • affected 26.2 to before 26.2.1.835 custom
  • affected 26.4 to before 26.4.1.2704 custom
  • affected 26.6 to before 26.6.1.2439 custom
  • affected 26.8 to before 26.8.1.597 custom
  • affected 26.10 to before 26.10.2.84 custom
Other versions: unaffected
Identifiers
CVE-2026-116366
CNA
ClickHouse
Weakness (CWE)
CWE-190
Tags
Published
30 Oct 2026
Updated
30 Oct 2026

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

ScoreRatingCVSSVectorSource
9.5 Critical 4.0 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 CNA (ClickHouse)
  • CISA KEV Not listed.
  • EPSS 0.0096, the 61st percentile, on 6 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 30 Oct 2026. New records show when each source confirmed them.

Sources

References from the CNA

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.