{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-55168",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-06-16T15:13:28.166Z",
        "datePublished": "2026-08-21T20:31:38.124Z",
        "dateUpdated": "2026-08-21T20:31:38.124Z"
    },
    "containers": {
        "cna": {
            "title": "Runtipi: Authenticated arbitrary file write via backup restore symlink planting",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-59",
                            "lang": "en",
                            "description": "CWE-59: Improper Link Resolution Before File Access ('Link Following')",
                            "type": "CWE"
                        }
                    ]
                },
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-61",
                            "lang": "en",
                            "description": "CWE-61: UNIX Symbolic Link (Symlink) Following",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "LOW",
                        "attackVector": "NETWORK",
                        "availabilityImpact": "HIGH",
                        "baseScore": 6.5,
                        "baseSeverity": "MEDIUM",
                        "confidentialityImpact": "NONE",
                        "integrityImpact": "HIGH",
                        "privilegesRequired": "HIGH",
                        "scope": "UNCHANGED",
                        "userInteraction": "NONE",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H",
                        "version": "3.1"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/runtipi/runtipi/security/advisories/GHSA-wcrf-g9p9-2wg7",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/runtipi/runtipi/security/advisories/GHSA-wcrf-g9p9-2wg7"
                },
                {
                    "name": "https://github.com/runtipi/runtipi/pull/2606",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/runtipi/runtipi/pull/2606"
                },
                {
                    "name": "https://github.com/runtipi/runtipi/commit/df529a211b05f3a0007b209b6c337f8c1942619c",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/runtipi/runtipi/commit/df529a211b05f3a0007b209b6c337f8c1942619c"
                },
                {
                    "name": "https://github.com/runtipi/runtipi/releases/tag/v4.10.1",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/runtipi/runtipi/releases/tag/v4.10.1"
                }
            ],
            "affected": [
                {
                    "vendor": "runtipi",
                    "product": "runtipi",
                    "versions": [
                        {
                            "version": "< 4.10.1",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-08-21T20:31:38.124Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "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."
                }
            ],
            "source": {
                "advisory": "GHSA-wcrf-g9p9-2wg7",
                "discovery": "UNKNOWN"
            }
        }
    }
}