{"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": "2026-10-30T20:05:40.100Z"}, "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"}}}}

{}

{"affected": [{"affectedData": [{"product": "pi-hole", "vendor": "pi-hole", "versions": [{"status": "affected", "version": ">= 6.4.2, < 6.5"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "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."}], "id": "CVE-2026-119336", "lastModified": "2026-10-30T20:17:08.297", "metrics": {"cvssMetricV31": [{"cvssData": {"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"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-10-30T20:17:08.297", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/pi-hole/pi-hole/commit/85de82dd2b63bf71ecb936177dfb82421d9d2f25"}, {"source": "security-advisories@github.com", "url": "https://github.com/pi-hole/pi-hole/commit/c1062f43b0de1876321bafac58fba862406366cb"}, {"source": "security-advisories@github.com", "url": "https://github.com/pi-hole/pi-hole/commit/e05dc3f139206fd8d0e4a052dceefb9056533517"}, {"source": "security-advisories@github.com", "url": "https://github.com/pi-hole/pi-hole/pull/6719"}, {"source": "security-advisories@github.com", "url": "https://github.com/pi-hole/pi-hole/releases/tag/v6.5"}, {"source": "security-advisories@github.com", "url": "https://github.com/pi-hole/pi-hole/security/advisories/GHSA-xch2-4qxw-g5vj"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-59"}, {"lang": "en", "value": "CWE-61"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{}