{"id":"CVE-2026-119335","aliases":["EUVD-2026-114439","GHSA-cf36-4hhc-8398"],"status":"published","title":"Pi-hole: Local privilege escalation from `pihole` user to root via CVE-2026-41489  fix bypass","description":"Pi-hole is a DNS sinkhole that protects devices from unwanted content without installing any client-side software. Prior to 6.5, advanced/Scripts/utils.sh getFTLPID() attempts to validate the pihole-owned /run/pihole-FTL.pid file with expr \"${FTL_PID}\" : \"[^[:digit:]]\", but this rejects only values whose first character is not a digit. An attacker with code execution as the pihole user can write a digit-prefixed arithmetic expression to the pihole-owned PID file. Root-run pihole subcommands then evaluate [[ \"$pid\" -eq \"-1\" ]], causing Bash to recursively evaluate array subscripts and execute command substitution as root. This bypasses the content-validation portion of the CVE-2026-41489 remediation while leaving its hardcoded PID-file path protection intact. This issue is fixed in version 6.5.","severity":{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00228,"percentile":0.13662,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-78"],"published":"2026-10-30T20:03:32Z","modified":"2026-11-05T03:17:19Z","products":[{"vendor":"pi-hole","product":"pi-hole"}],"references":[{"url":"https://github.com/pi-hole/pi-hole/security/advisories/GHSA-cf36-4hhc-8398","tags":["x_refsource_CONFIRM","exploit","advisory"]},{"url":"https://github.com/pi-hole/pi-hole/pull/6719","tags":["x_refsource_MISC","fix"]},{"url":"https://github.com/pi-hole/pi-hole/commit/555dd4d8b3699327fbba482bb73cce5f53979bd1","tags":["x_refsource_MISC","fix"]},{"url":"https://github.com/pi-hole/pi-hole/releases/tag/v6.5","tags":["x_refsource_MISC","web"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/119xxx/CVE-2026-119335.json","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-119335","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2026-119335","title":"Pi-hole: Local privilege escalation from `pihole` user to root via CVE-2026-41489  fix bypass","description":"Pi-hole is a DNS sinkhole that protects devices from unwanted content without installing any client-side software. Prior to 6.5, advanced/Scripts/utils.sh getFTLPID() attempts to validate the pihole-owned /run/pihole-FTL.pid file with expr \"${FTL_PID}\" : \"[^[:digit:]]\", but this rejects only values whose first character is not a digit. An attacker with code execution as the pihole user can write a digit-prefixed arithmetic expression to the pihole-owned PID file. Root-run pihole subcommands then evaluate [[ \"$pid\" -eq \"-1\" ]], causing Bash to recursively evaluate array subscripts and execute command substitution as root. This bypasses the content-validation portion of the CVE-2026-41489 remediation while leaving its hardcoded PID-file path protection intact. This issue is fixed in version 6.5.","status":"published","published":"2026-10-30T20:03:32.975Z","modified":"2026-11-05T02:38:07.6Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-78"],"updated_at":"2026-11-05T06:56:15.67765Z"}],"euvd":[{"id":"EUVD-2026-114439","description":"Pi-hole is a DNS sinkhole that protects devices from unwanted content without installing any client-side software. Prior to 6.5, advanced/Scripts/utils.sh getFTLPID() attempts to validate the pihole-owned /run/pihole-FTL.pid file with expr \"${FTL_PID}\" : \"[^[:digit:]]\", but this rejects only values whose first character is not a digit. An attacker with code execution as the pihole user can write a digit-prefixed arithmetic expression to the pihole-owned PID file. Root-run pihole subcommands then evaluate [[ \"$pid\" -eq \"-1\" ]], causing Bash to recursively evaluate array subscripts and execute command substitution as root. This bypasses the content-validation portion of the CVE-2026-41489 remediation while leaving its hardcoded PID-file path protection intact. This issue is fixed in version 6.5.","status":"published","published":"2026-10-30T20:03:32Z","modified":"2026-11-05T02:38:07Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-05T06:54:34.509968Z"}],"nvd":[{"id":"CVE-2026-119335","description":"Pi-hole is a DNS sinkhole that protects devices from unwanted content without installing any client-side software. Prior to 6.5, advanced/Scripts/utils.sh getFTLPID() attempts to validate the pihole-owned /run/pihole-FTL.pid file with expr \"${FTL_PID}\" : \"[^[:digit:]]\", but this rejects only values whose first character is not a digit. An attacker with code execution as the pihole user can write a digit-prefixed arithmetic expression to the pihole-owned PID file. Root-run pihole subcommands then evaluate [[ \"$pid\" -eq \"-1\" ]], causing Bash to recursively evaluate array subscripts and execute command substitution as root. This bypasses the content-validation portion of the CVE-2026-41489 remediation while leaving its hardcoded PID-file path protection intact. This issue is fixed in version 6.5.","status":"published","published":"2026-10-30T20:17:08.137Z","modified":"2026-11-05T03:17:19.617Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-78"],"updated_at":"2026-11-05T06:56:49.198795Z"}],"osv":[{"id":"CVE-2026-119335","title":"Pi-hole: Local privilege escalation from `pihole` user to root via CVE-2026-41489  fix bypass","description":"Pi-hole is a DNS sinkhole that protects devices from unwanted content without installing any client-side software. Prior to 6.5, advanced/Scripts/utils.sh getFTLPID() attempts to validate the pihole-owned /run/pihole-FTL.pid file with expr \"${FTL_PID}\" : \"[^[:digit:]]\", but this rejects only values whose first character is not a digit. An attacker with code execution as the pihole user can write a digit-prefixed arithmetic expression to the pihole-owned PID file. Root-run pihole subcommands then evaluate [[ \"$pid\" -eq \"-1\" ]], causing Bash to recursively evaluate array subscripts and execute command substitution as root. This bypasses the content-validation portion of the CVE-2026-41489 remediation while leaving its hardcoded PID-file path protection intact. This issue is fixed in version 6.5.","status":"published","published":"2026-10-30T20:03:32.975Z","modified":"2026-11-05T21:15:46.036203616Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-78"],"updated_at":"2026-11-05T22:01:21.792402Z"}]}}