CVE-2026-84282

{"id": "CVE-2026-84282", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-84282", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-09-10T17:58:23.276605Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.5, "attackVector": "ADJACENT_NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 3.6, "exploitabilityScore": 2.8}]}, "affected": [{"source": "cret@cert.org", "affectedData": [{"vendor": "Ascensio System SIA / OnlyOffice", "product": "ONLYOFFICE ownCloud integration plugin", "versions": [{"status": "affected", "version": "9.12"}]}]}], "published": "2026-09-08T15:18:51.473", "references": [{"url": "https://github.com/ONLYOFFICE/onlyoffice-owncloud/blob/master/controller/settingsapicontroller.php", "source": "cret@cert.org"}, {"url": "https://kb.cert.org/vuls/id/943094", "source": "cret@cert.org"}, {"url": "https://www.kb.cert.org/vuls/id/943094", "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Deferred", "descriptions": [{"lang": "en", "value": "A Server-Side Request Forgery (SSRF) vulnerability exists in the ONLYOFFICE ownCloud Integration plugin version 9.12. The /apps/onlyoffice/ajax/settings/address endpoint does not sufficiently validate the user-supplied Document Server URL before initiating outbound connections. An authenticated administrator can manipulate the document server parameter to cause the ownCloud server to send arbitrary requests to attacker-controlled destinations, including localhost and internal network hosts. This allows internal network reconnaissance and TCP port scanning based on differences in server responses."}], "lastModified": "2026-09-10T18:18:09.300", "sourceIdentifier": "cret@cert.org"}