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    2 vulnerabilities by Ascensio System SIA / OnlyOffice

    CVE-2026-84282 (GCVE-0-2026-84282)

    Vulnerability from nvd – Published: 2026-09-08 14:27 – Updated: 2026-09-10 17:58
    VLAI
    Title
    A Server-Side Request Forgery (SSRF) vulnerability exists in the ONLYOFFICE ownCloud Integration plugin (version 9.12)
    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.
    Severity
    6.5 (Medium)
    CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-09-10 17:58 UTC
    CWE
    Assigner
    References
    Impacted products
    Show details on NVD website
    To clipboard 

    {
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        "providerMetadata": {
          "dateUpdated": "2026-09-08T15:08:20.566Z",
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      },
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        "metrics": [
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              "attackVector": "ADJACENT_NETWORK",
              "availabilityImpact": "NONE",
              "baseScore": 6.5,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "HIGH",
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                  },
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                  },
                  {
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                  }
                ],
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                "timestamp": "2026-09-10T17:58:23.276605Z",
                "version": "2.0.3"
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        ],
        "providerMetadata": {
          "dateUpdated": "2026-09-10T17:58:25.989Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
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        {
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          "vendor": "Ascensio System SIA / OnlyOffice",
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            }
          ]
        }
      ],
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        }
      ],
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        },
        {
          "descriptions": [
            {
              "description": "CWE-20 Improper Input Validation",
              "lang": "en"
            }
          ]
        },
        {
          "descriptions": [
            {
              "description": "CWE-601 URL Redirection to Untrusted Site (\u0027Open Redirect\u0027)",
              "lang": "en"
            }
          ]
        }
      ],
      "providerMetadata": {
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      "references": [
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          "url": "https://github.com/ONLYOFFICE/onlyoffice-owncloud/blob/master/controller/settingsapicontroller.php"
        },
        {
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      "source": {
        "discovery": "UNKNOWN"
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    "datePublished": "2026-09-08T14:27:08.525Z",
    "dateReserved": "2026-09-01T14:36:00.661Z",
    "dateUpdated": "2026-09-10T17:58:25.989Z",
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    CVE-2026-84282 (GCVE-0-2026-84282)

    Vulnerability from cvelistv5 – Published: 2026-09-08 14:27 – Updated: 2026-09-10 17:58
    VLAI
    Title
    A Server-Side Request Forgery (SSRF) vulnerability exists in the ONLYOFFICE ownCloud Integration plugin (version 9.12)
    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.
    Severity
    6.5 (Medium)
    CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-09-10 17:58 UTC
    CWE
    Assigner
    References
    Impacted products
    Show details on NVD website
    To clipboard 

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        ],
        "title": "CVE Program Container"
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              "attackVector": "ADJACENT_NETWORK",
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              "confidentialityImpact": "HIGH",
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            }
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        },
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            {
              "description": "CWE-601 URL Redirection to Untrusted Site (\u0027Open Redirect\u0027)",
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