CVE-2024-27443
Synacor Zimbra Collaboration Suite (ZCS) Cross-Site Scripting (XSS) Vulnerability
An issue was discovered in Zimbra Collaboration (ZCS) 9.0 and 10.0. A Cross-Site Scripting (XSS) vulnerability exists in the CalendarInvite feature of the Zimbra webmail classic user interface, because of improper input validation in the handling of the calendar header. An attacker can exploit this via an email message containing a crafted calendar header with an embedded XSS payload.
When a victim views this message in the Zimbra webmail classic interface, the payload is executed in the context of the victim's session, potentially leading to execution of arbitrary JavaScript code.
MEDIUM · CVSS 6.1
⚠ CISA KEV
EPSS 0.32434
Act now
- Listed on CISA KEV (known exploited in the wild)
- SSVC exploitation status: active
- EPSS ≥ 0.10 - elevated exploitation probability
- EPSS percentile: top 3% of all CVEs by exploitation likelihood
- Public exploit or PoC is available
Sigma rules0
YARA rules0