{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-119336","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-10-29T20:44:30.286Z","datePublished":"2026-10-30T20:05:40.100Z","dateUpdated":"2026-10-30T22:14:23.468Z"},"containers":{"cna":{"title":"Pi-hole: arbitrary root file clobber / chmod / disclosure via updatecheck.sh cron following /etc/pihole/versions symlink","problemTypes":[{"descriptions":[{"cweId":"CWE-59","lang":"en","description":"CWE-59: Improper Link Resolution Before File Access ('Link Following')","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-61","lang":"en","description":"CWE-61: UNIX Symbolic Link (Symlink) Following","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"HIGH","baseScore":7.8,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"}}],"references":[{"name":"https://github.com/pi-hole/pi-hole/security/advisories/GHSA-xch2-4qxw-g5vj","tags":["x_refsource_CONFIRM"],"url":"https://github.com/pi-hole/pi-hole/security/advisories/GHSA-xch2-4qxw-g5vj"},{"name":"https://github.com/pi-hole/pi-hole/pull/6719","tags":["x_refsource_MISC"],"url":"https://github.com/pi-hole/pi-hole/pull/6719"},{"name":"https://github.com/pi-hole/pi-hole/commit/85de82dd2b63bf71ecb936177dfb82421d9d2f25","tags":["x_refsource_MISC"],"url":"https://github.com/pi-hole/pi-hole/commit/85de82dd2b63bf71ecb936177dfb82421d9d2f25"},{"name":"https://github.com/pi-hole/pi-hole/commit/c1062f43b0de1876321bafac58fba862406366cb","tags":["x_refsource_MISC"],"url":"https://github.com/pi-hole/pi-hole/commit/c1062f43b0de1876321bafac58fba862406366cb"},{"name":"https://github.com/pi-hole/pi-hole/commit/e05dc3f139206fd8d0e4a052dceefb9056533517","tags":["x_refsource_MISC"],"url":"https://github.com/pi-hole/pi-hole/commit/e05dc3f139206fd8d0e4a052dceefb9056533517"},{"name":"https://github.com/pi-hole/pi-hole/releases/tag/v6.5","tags":["x_refsource_MISC"],"url":"https://github.com/pi-hole/pi-hole/releases/tag/v6.5"}],"affected":[{"vendor":"pi-hole","product":"pi-hole","versions":[{"version":">= 6.4.2, < 6.5","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-10-30T20:05:40.100Z"},"descriptions":[{"lang":"en","value":"Pi-hole is a DNS sinkhole that protects devices from unwanted content without installing any client-side software. From 6.4.2 until 6.5, the root-run advanced/Scripts/updatecheck.sh cron job applies truncate -s 0 and chmod 644 to /etc/pihole/versions while following symbolic links in a directory owned by the pihole user. An attacker executing as pihole can replace that path with a symlink so the scheduled root operations truncate or create an arbitrary root-owned file, or race the operations so chmod makes a sensitive target world-readable without truncating it. This issue is fixed in version 6.5."}],"source":{"advisory":"GHSA-xch2-4qxw-g5vj","discovery":"UNKNOWN"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-30T21:21:13.368597Z","id":"CVE-2026-119336","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-10-30T22:14:23.468Z"}}]}}