CVE-2026-55168Runtipi: Authenticated arbitrary file write via backup restore symlink planting
Updated under an hour ago ()
Does this affect you?
It affects runtipi. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
Do this next
Free account, 1 product
Runtipi is a personal homeserver orchestrator. In 4.10.0 and earlier, Runtipi accepts symbolic links from an attacker-controlled backup archive and copies them into live application paths during the backup restore flow. An authenticated attacker can plant user-config/app.env as a symlink to an arbitrary reachable path and then send PUT /api/user-config/demoapp3:_user with attacker-controlled appEnv content. FilesystemService.writeTextFile() follows the planted link, allowing content to be written outside the intended restore and user-config directory boundary with Runtipi process permissions. This issue is fixed in version 4.10.1.
- CVSS
- 6.5 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H
- Weakness (CWE)
- CWE-59, CWE-61
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- GitHub_M
- NVD analysis
- Deferred
- Record last updated
- Aug 25, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
runtipi runtipi runtipi:runtipi (from the name) | before 4.10.1 | CNA record |
References
- https://github.com/runtipi/runtipi/security/advisories/GHSA-wcrf-g9p9-2wg7x-refsource-confirm
- https://github.com/runtipi/runtipi/pull/2606x-refsource-misc
- https://github.com/runtipi/runtipi/commit/df529a211b05f3a0007b209b6c337f8c1942619cx-refsource-misc
- https://github.com/runtipi/runtipi/releases/tag/v4.10.1x-refsource-misc
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.