{"id":"CVE-2026-84282","summary":"A Server-Side Request Forgery (SSRF) vulnerability exists in the ONLYOFFICE ownCloud Integration plugin (version 9.12)","details":"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.","modified":"2026-09-12T03:30:37.396182451Z","published":"2026-09-08T14:27:08.525Z","database_specific":{"cna_assigner":"certcc","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/84xxx/CVE-2026-84282.json"},"references":[{"type":"WEB","url":"https://github.com/ONLYOFFICE/onlyoffice-owncloud/blob/master/controller/settingsapicontroller.php"},{"type":"WEB","url":"https://kb.cert.org/vuls/id/943094"},{"type":"WEB","url":"https://www.kb.cert.org/vuls/id/943094"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/84xxx/CVE-2026-84282.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-84282"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/onlyoffice/onlyoffice-owncloud","events":[{"introduced":"91820ebe8ae227d604a2340cb5a2964cacd62077"},{"last_affected":"91820ebe8ae227d604a2340cb5a2964cacd62077"}],"database_specific":{"source":"AFFECTED_FIELD","extracted_events":[{"introduced":"9.12"},{"last_affected":"9.12"}]}}],"versions":["9.12","v9.12.1"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-84282.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"}]}