CVE-2026-50130
From 6.0 to 6.4.2, a user with code execution as the unprivileged pihole user can escalate to root by replacing /etc/pihole/logrotate.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.25%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Pi-hole is a DNS sinkhole that protects devices from unwanted content without installing any client-side software. From 6.0 to 6.4.2, a user with code execution as the unprivileged pihole user can escalate to root by replacing /etc/pihole/logrotate. The replacement is laundered to root:root ownership by pihole-FTL-prestart.sh and then parsed as root by the daily pihole flush cron, executing firstaction shell as uid 0. This issue is fixed in version 6.4.3.
- CVSS 3.1
- 8.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
- EPSS
- 0.25% probability · 17th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-282
- Affected
- pi-hole/pi-hole
- Source
- security-advisories@github.com
References
- https://github.com/pi-hole/pi-hole/commit/18002bf7c6bf382fe5861d01321f427019e1be89Patch
- https://github.com/pi-hole/pi-hole/releases/tag/v6.4.3Product, Release Notes
- https://github.com/pi-hole/pi-hole/security/advisories/GHSA-h8w9-qx2v-wrwwExploit, Mitigation, Vendor Advisory
- https://github.com/pi-hole/pi-hole/security/advisories/GHSA-h8w9-qx2v-wrwwExploit, Mitigation, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.