Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-84282— A Server-Side Request Forgery (SSRF) vulnerability exists in the ONLYOFFICE ownCloud Integration plugin (version 9.12)

Quick assessment

Affected
Ascensio System SIA / OnlyOffice ONLYOFFICE ownCloud integration plugin
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

ONLYOFFICE Docs是ONLYOFFICE公司开源的一款在线办公软件。 ONLYOFFICE Docs 9.12版本存在安全漏洞，该漏洞源于/apps/onlyoffice/ajax/settings/address端点未充分验证用户提供的Document Server URL，已认证管理员可操纵document server参数，导致服务器端请求伪造（SSRF），使ownCloud服务器向攻击者控制的本地主机及内网主机发起任意请求，可能导致内网侦察和TCP端口扫描。

AI Predicted 7.5 Difficulty: Easy EPSS 0.27% · P18

Affected Version Matrix 1

VendorProduct Version RangeStatus
Ascensio System SIA / OnlyOffice ONLYOFFICE ownCloud integration plugin 9.12 affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-84282

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
A Server-Side Request Forgery (SSRF) vulnerability exists in the ONLYOFFICE ownCloud Integration plugin (version 9.12)
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
ONLYOFFICE Docs 服务端请求伪造漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
ONLYOFFICE Docs是ONLYOFFICE公司开源的一款在线办公软件。 ONLYOFFICE Docs 9.12版本存在安全漏洞，该漏洞源于/apps/onlyoffice/ajax/settings/address端点未充分验证用户提供的Document Server URL，已认证管理员可操纵document server参数，导致服务器端请求伪造（SSRF），使ownCloud服务器向攻击者控制的本地主机及内网主机发起任意请求，可能导致内网侦察和TCP端口扫描。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Ascensio System SIA / OnlyOffice ONLYOFFICE ownCloud integration plugin 9.12 -

II. Public POCs for CVE-2026-84282

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-84282

请登录查看更多情报信息。

Patches & Fixes for CVE-2026-84282 (1)

Vendor Advisories for CVE-2026-84282 (1)

V. Comments for CVE-2026-84282

No comments yet

Leave a comment