{"cve":"CVE-2026-119336","nvd":{"published":"2026-10-30T20:17:08.297","modified":"2026-10-30T20:17:08.297","status":"Received","description":"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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8},"cwes":["CWE-59","CWE-61"],"references":["https://github.com/pi-hole/pi-hole/commit/85de82dd2b63bf71ecb936177dfb82421d9d2f25","https://github.com/pi-hole/pi-hole/commit/c1062f43b0de1876321bafac58fba862406366cb","https://github.com/pi-hole/pi-hole/commit/e05dc3f139206fd8d0e4a052dceefb9056533517","https://github.com/pi-hole/pi-hole/pull/6719","https://github.com/pi-hole/pi-hole/releases/tag/v6.5"],"products":[],"source":"nvd","synced_at":"2026-10-30T20:41:38.734504606+00:00"},"epss":null,"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}