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.
History

Fri, 11 Sep 2026 07:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-918

Fri, 11 Sep 2026 05:45:00 +0000

Type Values Removed Values Added
Weaknesses CWE-918

Thu, 10 Sep 2026 18:30:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 08 Sep 2026 21:00:00 +0000

Type Values Removed Values Added
First Time appeared Onlyoffice
Onlyoffice onlyoffice Owncloud Integration Plugin
Vendors & Products Onlyoffice
Onlyoffice onlyoffice Owncloud Integration Plugin

Tue, 08 Sep 2026 16:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-918
References

Tue, 08 Sep 2026 14:45:00 +0000

Type Values Removed Values Added
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.
Title A Server-Side Request Forgery (SSRF) vulnerability exists in the ONLYOFFICE ownCloud Integration plugin (version 9.12)
References

cve-icon MITRE

Status: PUBLISHED

Assigner: certcc

Published: 2026-09-08T14:27:08.525Z

Updated: 2026-09-10T17:58:25.989Z

Reserved: 2026-09-01T14:36:00.661Z

Link: CVE-2026-84282

cve-icon Vulnrichment

Updated: 2026-09-08T15:08:20.566Z

cve-icon NVD

Status : Deferred

Published: 2026-09-08T15:18:51.473

Modified: 2026-09-10T18:18:09.300

Link: CVE-2026-84282

cve-icon Redhat

No data.