CVE-2026-50130
Medium
Elevated severity or exploit probability.
CVSS base
8.8
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
EPSS — probability of exploitation (30 days)
0.3%
15.5th percentile
CISA KEV
Not listed
Weakness / dates
CWE-282
Published 2026-07-14 · modified 2026-07-30
CVSS breakdown
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
| Attack Vector | L | Local |
| Attack Complexity | L | Low |
| Privileges Required | L | Low |
| User Interaction | N | None |
| Scope | C | Changed |
| Confidentiality | H | High |
| Integrity | H | High |
| Availability | H | High |
Timeline
- 2026-07-14 — Published (NVD)
- 2026-07-30 — Last modified (NVD)
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.
Affected
References
- https://github.com/pi-hole/pi-hole/commit/18002bf7c6bf382fe5861d01321f427019e1be89
- https://github.com/pi-hole/pi-hole/releases/tag/v6.4.3
- exploit https://github.com/pi-hole/pi-hole/security/advisories/GHSA-h8w9-qx2v-wrww
- exploit https://github.com/pi-hole/pi-hole/security/advisories/GHSA-h8w9-qx2v-wrww