CVE-2025-53831

High

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.

SeverityHigh
CVSS8.2
Exploit probability—
ProductDrawIO for ownCloud
PublishedJul 6, 2026
First seenJul 6, 2026

How to fix

Sources list no fixed version or patch link for this vulnerability.

Affected products

ProductAffected versionsFixed in
owncloud DrawIO for ownCloud< 1.0.2—
owncloud ownCloud 10< 10.15.3—

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CVE-2025-53831 · DrawIO for ownCloud · Dark Radar