Critical Zimbra Flaw Could Let Crafted Emails Run Malicious Code in User Sessions

A significant security flaw in Zimbra's Classic Web Client has been identified that could enable attackers to execute arbitrary code through maliciously crafted emails, leading to a stored cross-site scripting (XSS) vulnerability. This flaw could compromise user sessions by running unauthorized scripts, posing a serious risk to users' data and privacy. Zimbra is urging its users to apply the latest updates to mitigate this threat, which underscores the importance of maintaining robust security practices in email services to protect against evolving cyber threats.