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CVE-2025-53831— DrawIO for ownCloud 10 is vulnerable to Stored XSS

Quick assessment

Affected
owncloud DrawIO for ownCloud
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

ownCloud DrawIO for ownCloud是德国ownCloud公司的一款集成在ownCloud中的嵌入式图表绘制工具。 ownCloud DrawIO for ownCloud 10 10.15.3之前版本存在跨站脚本漏洞，该漏洞源于输入中和不当，可能导致存储型跨站脚本攻击。以下版本受到影响：DrawIO for ownCloud 1.0.2之前版本和ownCloud 10 10.15.3之前版本。

CVSS 8.2 · High EPSS 0.28% · P20

Affected Version Matrix 2

VendorProduct Version RangeStatus
owncloud DrawIO for ownCloud < 1.0.2 affected
owncloud ownCloud 10 < 10.15.3 affected
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I. Basic Information for CVE-2025-53831

Vulnerability Information
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Vulnerability Title
DrawIO for ownCloud 10 is vulnerable to Stored XSS
Source: CVE Program / CVE List V5
Vulnerability Description
DrawIO for ownCloud is an application for using DrawIO with the file storage, synchronization, and sharing application ownCloud Classic. In DrawIO for ownCloud prior to version 1.0.2, which corresponds to ownCloud 10 prior to version 10.15.3, attackers with access to the DrawIO app can leverage improper neutralization of input during web page generation to achieve stored XSS. Upgrade ownCloud 10 to version 10.15.3 or later or upgrade DrawIO for ownCloud 10 to version 1.0.2 or later to receive a patch.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
ownCloud DrawIO for ownCloud 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
ownCloud DrawIO for ownCloud是德国ownCloud公司的一款集成在ownCloud中的嵌入式图表绘制工具。 ownCloud DrawIO for ownCloud 10 10.15.3之前版本存在跨站脚本漏洞，该漏洞源于输入中和不当，可能导致存储型跨站脚本攻击。以下版本受到影响：DrawIO for ownCloud 1.0.2之前版本和ownCloud 10 10.15.3之前版本。
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
owncloud DrawIO for ownCloud < 1.0.2 -
owncloud ownCloud 10 < 10.15.3 -

II. Public POCs for CVE-2025-53831

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 5266 chars
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Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
Full executable POC code
Exploit chain & mitigation
POC zip download
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III. Intelligence Information for CVE-2025-53831

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Vendor Advisories for CVE-2025-53831 (1)

Same Patch Batch · owncloud · 2026-07-06 · 5 CVEs total

CVE-2025-53827 9.1 CRITICAL ownCloud Core: Updater has an exposed dangerous method or function
CVE-2025-53830 9.1 CRITICAL Anti-Virus for ownCloud 10 is vulnerable to Server-Side Request Forgery (SSRF)
CVE-2025-53828 8.5 HIGH SharePoint for ownCloud 10 is vulnerable to Server-Side Request Forgery (SSRF)
CVE-2025-53829 8.0 HIGH ownCloud 10 is vulnerable to Relative Path Traversal

IV. Related Vulnerabilities

Same vendor: owncloud
Same weakness: CWE-79

V. Comments for CVE-2025-53831

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