Security Advisory

CVE-2026-55168

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-08-21 20:31:38

Last updated 2026-08-25 17:01:52

Assigner GitHub_M

CVSS score 6.5

State PUBLISHED

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.

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