Zimbra’s CalendarInvite Chaos: How to Avoid a Sednit Surprise!
Attention Zimbra users: CVE-2024-27443 is the XSS vulnerability you never knew you needed to worry about! This flaw lets hackers crash your calendar party and walk away with your data. It’s like an uninvited guest at your digital soirée. Patch it up pronto or risk having your personal info RSVP’d to the wrong crowd!

Hot Take:
Looks like Zimbra’s CalendarInvite feature has taken a page from the book of bad surprises and decided to RSVP with a critical XSS vulnerability! Just when you thought your calendar was your best friend, it turns out it could be a hacker’s open invitation. Time to send those vulnerabilities packing and patch up before Sednit crashes the party.
Key Points:
- CVE-2024-27443 is a critical XSS vulnerability in Zimbra Collaboration Suite (ZCS).
- It affects CalendarInvite feature in ZCS versions 9.0 (patches 1-38) and 10.0 (up to 10.0.6).
- The flaw allows attackers to execute malicious code and compromise user sessions.
- 129,131 vulnerable ZCS instances have been identified globally, mostly in the cloud.
- Security patches are available in ZCS version 10.0.7 and 9.0.0 Patch 39.
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