{"id":"CVE-2026-116366","published":"2026-10-30T11:17:32Z","modified":"2026-10-30T19:37:07Z","title":"An issue has been discovered in ClickHouse Server that, under certain conditions, could allow an unauthenticated user…","vendor":"ClickHouse","product":"ClickHouse","tier":"core","eol":null,"description":{"text":"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.","provenance":"source","from":"NVD"},"summary":null,"cvss":{"score":9.5,"severity":"CRITICAL","version":"4.0","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","provenance":"source","from":"NVD"},"epss":null,"kev":null,"vulncheckKev":null,"exploited":false,"otx":{"pulseCount":1,"pulses":[{"name":"Known_Cve | Oct 31, 2026 | Part 3/3","url":"https://otx.alienvault.com/pulse/6ae4af0c5843731a119f5472","created":"2026-10-30"}],"provenance":"machine"},"cwes":[{"id":"CWE-190","name":"Integer Overflow or Wraparound"}],"references":[{"url":"https://clickhouse.com/docs/resources/changelogs/security-changelog","tags":[]},{"url":"https://github.com/ClickHouse/ClickHouse/blob/master/SECURITY.md","tags":[]}],"techniques":[],"reports":[],"affected":[],"advisories":[],"euvd":{"id":"EUVD-2026-113778","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-113778","exploited":false,"exploitedSince":null,"provenance":"source"},"exploits":[],"exploitSources":{"pocGithub":{"count":1,"skipped":0,"earliest":"2026-10-31","earliestUrl":"https://github.com/googlesky/CVE-2026-116366","repos":[{"name":"googlesky/CVE-2026-116366","url":"https://github.com/googlesky/CVE-2026-116366","stars":0,"created":"2026-10-31"}]},"first":{"date":"2026-10-31","source":"PoC-in-GitHub","url":"https://github.com/googlesky/CVE-2026-116366"},"provenance":"source"},"exploitRefs":[],"flow":[],"timeline":[{"date":"2026-10-30","kind":"published","label":"Published (NVD)","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-116366","provenance":"source"},{"date":"2026-10-31","kind":"exploit-public","label":"First public exploit: PoC-in-GitHub","url":"https://github.com/googlesky/CVE-2026-116366","provenance":"source"}],"speed":{"daysToPublicExploit":1,"firstExploitFrom":"PoC-in-GitHub","daysToKev":null},"priority":{"score":12.3,"factors":[{"name":"In a KEV catalog","points":0.0,"detail":"not listed"},{"name":"Recent KEV listing","points":0.0,"detail":"not listed"},{"name":"Known ransomware use","points":0.0,"detail":"not known"},{"name":"EPSS percentile","points":0.0,"detail":"no EPSS score"},{"name":"Named in threat reports","points":0.0,"detail":"0 reports"},{"name":"Public exploit code","points":5.0,"detail":"1 PoC-in-GitHub repo"},{"name":"Mentioned in OTX pulses","points":0.68,"detail":"1 pulse"},{"name":"CVSS severity","points":6.65,"detail":"base score 9.5"},{"name":"End-of-life product","points":0.0,"detail":"supported or unknown"}]}}