{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-52821",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-06-08T18:11:06.661Z",
        "datePublished": "2026-09-15T10:38:16.963Z",
        "dateUpdated": "2026-09-17T14:20:56.384Z"
    },
    "containers": {
        "cna": {
            "title": "Kimai: Improper Authorization in Kimai Activity Creation with Preset Project Allows Creation Under Unauthorized Projects",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-639",
                            "lang": "en",
                            "description": "CWE-639: Authorization Bypass Through User-Controlled Key",
                            "type": "CWE"
                        }
                    ]
                },
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-862",
                            "lang": "en",
                            "description": "CWE-862: Missing Authorization",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV4_0": {
                        "attackVector": "NETWORK",
                        "attackComplexity": "LOW",
                        "attackRequirements": "NONE",
                        "privilegesRequired": "LOW",
                        "userInteraction": "NONE",
                        "vulnConfidentialityImpact": "NONE",
                        "vulnIntegrityImpact": "LOW",
                        "vulnAvailabilityImpact": "NONE",
                        "subConfidentialityImpact": "NONE",
                        "subIntegrityImpact": "NONE",
                        "subAvailabilityImpact": "NONE",
                        "baseScore": 5.3,
                        "baseSeverity": "MEDIUM",
                        "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N",
                        "version": "4.0"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/kimai/kimai/security/advisories/GHSA-3q6q-26vg-v97x",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/kimai/kimai/security/advisories/GHSA-3q6q-26vg-v97x"
                },
                {
                    "name": "https://github.com/kimai/kimai/pull/5929",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/kimai/kimai/pull/5929"
                },
                {
                    "name": "https://github.com/kimai/kimai/commit/976d38e8a4485a1c923ee7b5841849e91a06e849",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/kimai/kimai/commit/976d38e8a4485a1c923ee7b5841849e91a06e849"
                },
                {
                    "name": "https://github.com/kimai/kimai/releases/tag/2.57.0",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/kimai/kimai/releases/tag/2.57.0"
                },
                {
                    "name": "https://www.kimai.org/en/security/ghsa-3q6q-26vg-v97x",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://www.kimai.org/en/security/ghsa-3q6q-26vg-v97x"
                }
            ],
            "affected": [
                {
                    "vendor": "kimai",
                    "product": "kimai",
                    "versions": [
                        {
                            "version": "< 2.57.0",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-09-15T10:38:16.963Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "Kimai is an open-source time tracking application. Prior to 2.57.0, GET or POST requests to /en/admin/activity/create/{project} and /en/admin/project/create/{customer} require only the generic create_activity or create_project capability and do not verify edit access to the supplied Project or Customer object. A user who knows a valid project.id or customer identifier can use the preset-parent creation logic in src/Controller/ActivityController.php or src/Controller/ProjectController.php to persist a new child business object under an unauthorized parent, polluting project or customer configuration and influencing later time-entry, rate, reporting, and billing behavior. This issue is fixed in version 2.57.0."
                }
            ],
            "source": {
                "advisory": "GHSA-3q6q-26vg-v97x",
                "discovery": "UNKNOWN"
            }
        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-09-17T14:20:34.001069Z",
                                "id": "CVE-2026-52821",
                                "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": "2026-09-17T14:20:56.384Z"
                }
            }
        ]
    }
}