CVE-2026-119336
Pi-hole is a DNS sinkhole that protects devices from unwanted content without installing any…
- Risk score
- 47/100
- CVSS
- 7.8 v3.1
- Published
- 30 Oct 2026
Open in the live forecast Today's forecast
What to know
- What it is
- 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 us…
- Affected
- See advisory
- Fix
- Upgrade the product to 6.5 or later.
- Exploitation
- No known exploitation
Why it is Yellow
- CVSS 7.8 high
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
- https://github.com/pi-hole/pi-hole/security/advisories/GHSA-xch2-4qxw-g5vj
Original 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.
Last activity 30 Oct 2026. Patch Forecast updates every hour.