{"id":"CVE-2026-84282","state":"PUBLISHED","title":"A Server-Side Request Forgery (SSRF) vulnerability exists in the ONLYOFFICE ownCloud Integration plugin (version 9.12)","description":"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.","publishedAt":"2026-09-08T14:27:08.525Z","updatedAt":"2026-09-10T17:58:25.989Z","severity":{"score":6.5,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","source":"CISA-ADP"},"assigner":"certcc","products":["Ascensio System SIA / OnlyOffice ONLYOFFICE ownCloud integration plugin"],"affected":[{"vendor":"Ascensio System SIA / OnlyOffice","product":"ONLYOFFICE ownCloud integration plugin","versions":[{"version":"9.12","status":"affected"}]}],"references":["https://github.com/ONLYOFFICE/onlyoffice-owncloud/blob/master/controller/settingsapicontroller.php","https://kb.cert.org/vuls/id/943094","https://www.kb.cert.org/vuls/id/943094"],"weaknesses":[],"ingestedAt":"2026-10-29T20:13:15.269Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/84xxx/CVE-2026-84282.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-84282","state":"PUBLISHED","datePublished":"2026-09-08T14:27:08.525Z","dateUpdated":"2026-09-10T17:58:25.989Z","assignerShortName":"certcc","assignerOrgId":"37e5125f-f79b-445b-8fad-9564f167944b","dateReserved":"2026-09-01T14:36:00.661Z"},"containers":{"cna":{"title":"A Server-Side Request Forgery (SSRF) vulnerability exists in the ONLYOFFICE ownCloud Integration plugin (version 9.12)","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."}],"affected":[{"vendor":"Ascensio System SIA / OnlyOffice","product":"ONLYOFFICE ownCloud integration plugin","versions":[{"version":"9.12","status":"affected"}]}],"references":[{"url":"https://github.com/ONLYOFFICE/onlyoffice-owncloud/blob/master/controller/settingsapicontroller.php"},{"url":"https://kb.cert.org/vuls/id/943094"}],"problemTypes":[{"descriptions":[{"lang":"en","description":"CWE-918 Server-Side Request Forgery (SSRF)"}]},{"descriptions":[{"lang":"en","description":"CWE-20 Improper Input Validation"}]},{"descriptions":[{"lang":"en","description":"CWE-601 URL Redirection to Untrusted Site ('Open Redirect')"}]}],"providerMetadata":{"shortName":"certcc","orgId":"37e5125f-f79b-445b-8fad-9564f167944b","dateUpdated":"2026-09-08T14:27:08.525Z"},"source":{"discovery":"UNKNOWN"},"x_generator":{"engine":"VINCE 3.0.45","env":"prod","origin":"https://cveawg.mitre.org/api/cve/CVE-2026-84282"}},"adp":[{"title":"CVE Program Container","references":[{"url":"https://www.kb.cert.org/vuls/id/943094"}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2026-09-08T15:08:20.566Z"}},{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"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"}},{"other":{"type":"ssvc","content":{"timestamp":"2026-09-10T17:58:23.276605Z","id":"CVE-2026-84282","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-09-10T17:58:25.989Z"}}]}}}