steps/utils/modcss.inc in Roundcube Webmail before 0.5.1 does not
properly verify that a request is an expected request for an external
Cascading Style Sheets (CSS) stylesheet, which allows remote
authenticated users to trigger arbitrary outbound TCP connections from
the server, and possibly obtain sensitive information, via a crafted
Note:References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
Disclaimer: The entry creation date may reflect when
the CVE-ID was allocated or reserved, and does not
necessarily indicate when this vulnerability was
discovered, shared with the affected vendor, publicly
disclosed, or updated in CVE.
This is an entry on the CVE
list, which standardizes names for security