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CVE-2026-50130
8.8 HIGH
- CVSS version (CVSS): 3.1
- Attack Vector (AV): Local (L)
- Attack Complexity (AC): Low (L)
- Privileges Required (PR): Low (L)
- User Interaction (UI): None (N)
- Scope (S): Changed (C)
- Confidentiality (C): High (H)
- Integrity (I): High (H)
- Availability (A): High (H)
- Modified Attack Vector (MAV): Local (L)
- Modified Attack Complexity (MAC): Low (L)
- Modified Privileges Required (MPR): Low (L)
- Modified User Interaction (MUI): None (N)
- Modified Confidentiality (MC): High (H)
- Modified Scope (MS): Changed (C)
- Modified Integrity (MI): High (H)
- Modified Availability (MA): High (H)
Activity log
- Created suggestion
Pi-hole: Local privilege escalation from `pihole` user to root via `/etc/pihole/logrotate`
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.
References
-
https://github.com/pi-hole/pi-hole/security/advisories/GHSA-h8w9-qx2v-wrww x_refsource_CONFIRM
-
https://github.com/pi-hole/pi-hole/releases/tag/v6.4.3 x_refsource_MISC
Affected products
pi-hole
- ==>= 6.0.0, < 6.4.3
Package maintainers
-
@honnip Jung seungwoo <me@honnip.page>