Recent RoundCube Webmail Vulnerability Exploited in Attacks
Source SecurityWeek
Rated Medium by Threat Radar from the SecurityWeek text
Data as of 24 Feb 2026, 00:09 UTC
What to do
AI-suggested
Organizations should immediately verify that all RoundCube Webmail instances are updated to the latest patched version released in December 2025. Beyond patching, implement strict input validation and sanitization for all SVG and other image content uploaded or displayed within the webmail interface. Deploy Content Security Policy (CSP) headers to restrict script execution and reduce the risk of XSS attacks. Educate users to be cautious when opening emails with embedded SVG content or attachments from untrusted sources. Monitor webmail logs for unusual activities indicative of exploitation attempts. Consider disabling or restricting SVG rendering in the webmail client if feasible. Regularly audit and update webmail configurations to minimize attack surfaces and ensure security best practices are followed.
Description
Patched in December 2025, the exploited flaw leads to XSS attacks via the animate tags in SVG documents. The post Recent RoundCube Webmail Vulnerability Exploited in Attacks appeared first on SecurityWeek .