{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-54003",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-06-11T16:34:11.635Z",
        "datePublished": "2026-07-09T18:36:43.667Z",
        "dateUpdated": "2026-07-09T19:23:24.078Z"
    },
    "containers": {
        "cna": {
            "title": "Kirby: External Initialization of the Panel on reverse proxy setups with the `Forwarded` header",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-454",
                            "lang": "en",
                            "description": "CWE-454: External Initialization of Trusted Variables or Data Stores",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV4_0": {
                        "attackVector": "NETWORK",
                        "attackComplexity": "LOW",
                        "attackRequirements": "PRESENT",
                        "privilegesRequired": "NONE",
                        "userInteraction": "NONE",
                        "vulnConfidentialityImpact": "HIGH",
                        "vulnIntegrityImpact": "HIGH",
                        "vulnAvailabilityImpact": "NONE",
                        "subConfidentialityImpact": "NONE",
                        "subIntegrityImpact": "NONE",
                        "subAvailabilityImpact": "NONE",
                        "baseScore": 9.1,
                        "baseSeverity": "CRITICAL",
                        "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N",
                        "version": "4.0"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/getkirby/kirby/security/advisories/GHSA-whxw-24jc-cwmv",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/getkirby/kirby/security/advisories/GHSA-whxw-24jc-cwmv"
                },
                {
                    "name": "https://github.com/getkirby/kirby/pull/8166",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/getkirby/kirby/pull/8166"
                },
                {
                    "name": "https://github.com/getkirby/kirby/commit/1c7fee90e49153cf9ca4a6ec17481d25fbedc48d",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/getkirby/kirby/commit/1c7fee90e49153cf9ca4a6ec17481d25fbedc48d"
                },
                {
                    "name": "https://github.com/getkirby/kirby/commit/3423f66c01dbc0455862e23ee699d2aa469f3234",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/getkirby/kirby/commit/3423f66c01dbc0455862e23ee699d2aa469f3234"
                },
                {
                    "name": "https://github.com/getkirby/kirby/commit/66a3a14bf0892d320723ba766cd5f1d33a51d15b",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/getkirby/kirby/commit/66a3a14bf0892d320723ba766cd5f1d33a51d15b"
                },
                {
                    "name": "https://github.com/getkirby/kirby/commit/ab992dc149610b90e337c2955ab6ccb7f72ffb3a",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/getkirby/kirby/commit/ab992dc149610b90e337c2955ab6ccb7f72ffb3a"
                },
                {
                    "name": "https://github.com/getkirby/kirby/releases/tag/4.9.4",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/getkirby/kirby/releases/tag/4.9.4"
                },
                {
                    "name": "https://github.com/getkirby/kirby/releases/tag/5.4.4",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/getkirby/kirby/releases/tag/5.4.4"
                }
            ],
            "affected": [
                {
                    "vendor": "getkirby",
                    "product": "kirby",
                    "versions": [
                        {
                            "version": "< 4.9.4",
                            "status": "affected"
                        },
                        {
                            "version": ">= 5.0.0, < 5.4.4",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-07-09T18:36:43.667Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "Kirby is an open-source content management system. Prior to 4.9.4 and from 5.4.4, Kirby sites with no configured user accounts that run on publicly accessible servers behind a reverse proxy setting the Forwarded, X-Client-IP, or X-Real-IP request header could allow remote attackers to install the Panel and create the first admin user because local-IP checks trusted those headers incorrectly. This issue is fixed in versions 4.9.4 and 5.4.4."
                }
            ],
            "source": {
                "advisory": "GHSA-whxw-24jc-cwmv",
                "discovery": "UNKNOWN"
            }
        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-07-09T19:23:16.615569Z",
                                "id": "CVE-2026-54003",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "yes"
                                    },
                                    {
                                        "Technical Impact": "partial"
                                    }
                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2026-07-09T19:23:24.078Z"
                }
            }
        ]
    }
}