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Reflected XSS

Platform: ownCloud Server

Versions: 4.0.3,

Date: 6/23/2012

Risk level: Medium


Cross-site scripting (XSS) vulnerability in index.php in ownCloud before 4.0.3 allows remote attackers to inject arbitrary web script or HTML via the redirect_url parameter.

Affected Software

  • ownCloud Server < 4.0.3 (CVE-2012-4395)

Action Taken

It is recommended that all instances are upgraded to ownCloud Server 4.0.3.


The ownCloud team thanks the following people for their research and responsible disclosure of the above advisory:

  • Lukas Reschke – ownCloud Inc. (lukas@owncloud.org) – Vulnerability discovery and disclosure.

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