Description
Nextcloud Server before 10.0.1 & ownCloud Server before 9.0.6 and 9.1.2 suffer from Stored XSS in CardDAV image export. The CardDAV image export functionality as implemented in Nextcloud/ownCloud allows the download of images stored within a vCard. Due to not performing any kind of verification on the image content this is prone to a stored Cross-Site Scripting attack.
Remediation
References
Related Vulnerabilities
Apache Tomcat Other Vulnerability (CVE-2005-2090)
WordPress Improper Input Validation Vulnerability (CVE-2009-2431)
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WordPress Plugin Product Input Fields for WooCommerce Arbitrary File Download (1.2.6)
MediaWiki Permissions, Privileges, and Access Controls Vulnerability (CVE-2015-8004)