{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-50539", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-06-04T20:37:18.653Z", "datePublished": "2026-10-28T15:31:12.074Z", "dateUpdated": "2026-10-28T16:06:48.627Z"}, "containers": {"cna": {"title": "Xibo: Missing Object-Level Authorization on /notification/export/{id} Allows Authenticated Users to Download Arbitrary Attachments", "problemTypes": [{"descriptions": [{"cweId": "CWE-862", "lang": "en", "description": "CWE-862: Missing Authorization", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/xibosignage/xibo-cms/security/advisories/GHSA-p4pg-v57g-7jf6", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/xibosignage/xibo-cms/security/advisories/GHSA-p4pg-v57g-7jf6"}, {"name": "https://github.com/xibosignage/xibo-cms/pull/3487", "tags": ["x_refsource_MISC"], "url": "https://github.com/xibosignage/xibo-cms/pull/3487"}, {"name": "https://github.com/xibosignage/xibo-cms/commit/13ed6e6bf3c15a93089b4fd2148379888ee82d74", "tags": ["x_refsource_MISC"], "url": "https://github.com/xibosignage/xibo-cms/commit/13ed6e6bf3c15a93089b4fd2148379888ee82d74"}, {"name": "https://github.com/xibosignage/xibo-cms/commit/1dcc3f2de6dc7861e7dbb5148e94f14ebb1513b3", "tags": ["x_refsource_MISC"], "url": "https://github.com/xibosignage/xibo-cms/commit/1dcc3f2de6dc7861e7dbb5148e94f14ebb1513b3"}, {"name": "https://github.com/xibosignage/xibo-cms/releases/tag/4.4.3", "tags": ["x_refsource_MISC"], "url": "https://github.com/xibosignage/xibo-cms/releases/tag/4.4.3"}, {"name": "https://github.com/xibosignage/xibo-cms/releases/tag/4.5.0-beta", "tags": ["x_refsource_MISC"], "url": "https://github.com/xibosignage/xibo-cms/releases/tag/4.5.0-beta"}], "affected": [{"vendor": "xibosignage", "product": "xibo-cms", "versions": [{"version": "< 4.4.3", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-10-28T15:31:12.074Z"}, "descriptions": [{"lang": "en", "value": "Xibo is an open source digital signage platform with a web content management system and Windows display player software. Prior to 4.4.3, missing object-level authorization on `/notification/export/{id}` allows an authenticated user to download attachments from any notification, including notifications created by administrators, by iterating over `sequential notification IDs`. Exploitation requires access to the `Notification Centre` to view past notifications, a privilege granted to non-administrators as standard. This issue is fixed in version 4.4.3."}], "source": {"advisory": "GHSA-p4pg-v57g-7jf6", "discovery": "UNKNOWN"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-10-28T16:01:06.316667Z", "id": "CVE-2026-50539", "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": "2026-10-28T16:06:48.627Z"}}]}}

{}

{"affected": [{"affectedData": [{"product": "xibo-cms", "vendor": "xibosignage", "versions": [{"status": "affected", "version": "< 4.4.3"}]}], "source": "[email protected]"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Xibo is an open source digital signage platform with a web content management system and Windows display player software. Prior to 4.4.3, missing object-level authorization on `/notification/export/{id}` allows an authenticated user to download attachments from any notification, including notifications created by administrators, by iterating over `sequential notification IDs`. Exploitation requires access to the `Notification Centre` to view past notifications, a privilege granted to non-administrators as standard. This issue is fixed in version 4.4.3."}], "id": "CVE-2026-50539", "lastModified": "2026-10-28T16:17:07.733", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 3.6, "source": "[email protected]", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-50539", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-10-28T16:01:06.316667Z", "version": "2.0.3"}}]}, "published": "2026-10-28T16:17:07.733", "references": [{"source": "[email protected]", "url": "https://github.com/xibosignage/xibo-cms/commit/13ed6e6bf3c15a93089b4fd2148379888ee82d74"}, {"source": "[email protected]", "url": "https://github.com/xibosignage/xibo-cms/commit/1dcc3f2de6dc7861e7dbb5148e94f14ebb1513b3"}, {"source": "[email protected]", "url": "https://github.com/xibosignage/xibo-cms/pull/3487"}, {"source": "[email protected]", "url": "https://github.com/xibosignage/xibo-cms/releases/tag/4.4.3"}, {"source": "[email protected]", "url": "https://github.com/xibosignage/xibo-cms/releases/tag/4.5.0-beta"}, {"source": "[email protected]", "url": "https://github.com/xibosignage/xibo-cms/security/advisories/GHSA-p4pg-v57g-7jf6"}], "sourceIdentifier": "[email protected]", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-862"}], "source": "[email protected]", "type": "Primary"}]}

{}

{"created": "2026-10-28T16:30:15.961687+00:00", "updated": "2026-10-28T16:30:15.961695+00:00", "vendors": []}