CVE-2026-119336 json
Pi-hole: arbitrary root file clobber / chmod / disclosure via updatecheck.sh cron following /etc/pihole/versions symlink
published 10d ago modified 7d ago also EUVD-2026-114440
- cvss
- 7.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 16%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- pi-hole pi-hole 6.5
- github.com/pi-hole/pi-hole@85de82d commit
- github.com/pi-hole/pi-hole@c1062f4 commit
- github.com/pi-hole/pi-hole@e05dc3f commit
- github.com/pi-hole/pi-hole#6719 pull request
- github.com/pi-hole/pi-hole/releases/tag/v6.5 release
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- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 10d ago
Exploit prediction
0.25% chance of exploitation in the next 30 days, higher than 16% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Affected products
- pi-hole pi-hole
Classification
References
- github.com /pi-hole/pi-hole/pull/6719
- github.com /pi-hole/pi-hole/commit/85de82dd2b63bf71ecb936177dfb82421d9d2f25
- github.com /pi-hole/pi-hole/commit/c1062f43b0de1876321bafac58fba862406366cb
- github.com /pi-hole/pi-hole/commit/e05dc3f139206fd8d0e4a052dceefb9056533517
- github.com /pi-hole/pi-hole/security/advisories/GHSA-xch2-4qxw-g5vj
- github.com /pi-hole/pi-hole/releases/tag/v6.5
Sources
- CVE List CVE-2026-119336
- NVD CVE-2026-119336
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.