CVE-2026-84282

Summary

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 Software

VendorProductVersion RangeStatus
Ascensio System SIA / OnlyOfficeONLYOFFICE ownCloud integration plugin9.12affected

Weaknesses

  • CWE-918 Server-Side Request Forgery (SSRF)
  • CWE-20 Improper Input Validation
  • CWE-601 URL Redirection to Untrusted Site ('Open Redirect')

ADP Enrichment

CVE Program Container

Additional References

References