MEDIUM 6.5 NVD
CVE-2026-84282
A Server-Side Request Forgery (SSRF) vulnerability exists in the ONLYOFFICE ownCloud Integration plugin version 9.12. The /apps/onlyoffice/ajax/settings/address
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.
References
- https://github.com/ONLYOFFICE/onlyoffice-owncloud/blob/master/controller/settingsapicontro
- https://kb.cert.org/vuls/id/943094
- https://www.kb.cert.org/vuls/id/943094
This medium severity vulnerability with a CVSS score of 6.5 was published on 2026-09-08 via NVD.
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