{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "4.10.1"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "df529a211b05f3a0007b209b6c337f8c1942619c"
            },
            {
              "fixed": "5734817389df55aafb9afd571e42e12ab7e647e0"
            }
          ],
          "repo": "https://github.com/runtipi/runtipi",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-wcrf-g9p9-2wg7"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-59",
      "CWE-61"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55168.json"
  },
  "details": "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.",
  "id": "CVE-2026-55168",
  "modified": "2026-08-27T11:30:54.931034085Z",
  "published": "2026-08-21T20:31:38.124Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/runtipi/runtipi/releases/tag/v4.10.1"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55168.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/runtipi/runtipi/security/advisories/GHSA-wcrf-g9p9-2wg7"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-55168"
    },
    {
      "type": "FIX",
      "url": "https://github.com/runtipi/runtipi/commit/df529a211b05f3a0007b209b6c337f8c1942619c"
    },
    {
      "type": "FIX",
      "url": "https://github.com/runtipi/runtipi/pull/2606"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Runtipi: Authenticated arbitrary file write via backup restore symlink planting"
}