{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-52850",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-06-08T18:41:27.724Z",
        "datePublished": "2026-09-24T18:30:06.702Z",
        "dateUpdated": "2026-09-29T03:08:21.988Z"
    },
    "containers": {
        "cna": {
            "title": "Docmost: Broken access control in transclusion lookup API leaks sync-block content across private spaces",
            "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": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "LOW",
                        "attackVector": "NETWORK",
                        "availabilityImpact": "NONE",
                        "baseScore": 4.3,
                        "baseSeverity": "MEDIUM",
                        "confidentialityImpact": "LOW",
                        "integrityImpact": "NONE",
                        "privilegesRequired": "LOW",
                        "scope": "UNCHANGED",
                        "userInteraction": "NONE",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
                        "version": "3.1"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/docmost/docmost/security/advisories/GHSA-5vhf-cgf2-c9cq",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/docmost/docmost/security/advisories/GHSA-5vhf-cgf2-c9cq"
                },
                {
                    "name": "https://github.com/docmost/docmost/commit/830b5b4d458a1302f42c8b68bff9ff559f6eb342",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/docmost/docmost/commit/830b5b4d458a1302f42c8b68bff9ff559f6eb342"
                },
                {
                    "name": "https://github.com/docmost/docmost/releases/tag/v0.90.1",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/docmost/docmost/releases/tag/v0.90.1"
                }
            ],
            "affected": [
                {
                    "vendor": "docmost",
                    "product": "docmost",
                    "versions": [
                        {
                            "version": "< 0.90.1",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-09-24T18:30:06.702Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "Docmost is open-source collaborative wiki and documentation software. Prior to 0.90.1, an authenticated workspace member who does not belong to a private space can call the transclusion / sync-block lookup API with a known sourcePageId and transclusionId pair because the lookup does not enforce private space membership before resolving the source page. The API can return confidential sync-block content and source page metadata even though the normal page APIs deny access to the same page. This issue is fixed in version 0.90.1."
                }
            ],
            "source": {
                "advisory": "GHSA-5vhf-cgf2-c9cq",
                "discovery": "UNKNOWN"
            }
        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-09-29T03:08:11.300076Z",
                                "id": "CVE-2026-52850",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "no"
                                    },
                                    {
                                        "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": "2026-09-29T03:08:21.988Z"
                }
            }
        ]
    }
}