Description
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 request.
Remediation
References
Related Vulnerabilities
Jenkins Deserialization of Untrusted Data Vulnerability (CVE-2017-1000353)
WordPress Plugin Photo Gallery by 10Web-Mobile-Friendly Image Gallery Cross-Site Scripting (1.2.12)
WebLogic Improper Input Validation Vulnerability (CVE-2019-12400)
IBM WebSEAL Incorrect Default Permissions Vulnerability (CVE-2024-35139)