Vulnerability Description
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 Score
MEDIUM
Related Weaknesses (CWE)
References
- https://github.com/runtipi/runtipi/commit/df529a211b05f3a0007b209b6c337f8c194261
- https://github.com/runtipi/runtipi/pull/2606
- https://github.com/runtipi/runtipi/releases/tag/v4.10.1
- https://github.com/runtipi/runtipi/security/advisories/GHSA-wcrf-g9p9-2wg7
FAQ
What is CVE-2026-55168?
CVE-2026-55168 is a vulnerability with a CVSS score of 6.5 (MEDIUM). 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 b...
How severe is CVE-2026-55168?
CVE-2026-55168 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-55168?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.