CVE-2024-27443
Last modified
CVE-2024-27443 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. 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. CISA has confirmed active exploitation in the wild. EPSS estimates a 19.54% chance of exploitation in the next 30 days.
Description
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Exploitation Status
This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by .
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Zimbra | Collaboration | >= 10.0.0, < 10.0.7 |
| Zimbra | Collaboration | 9.0.0 |
References
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-27443US Government Resource
- https://www.welivesecurity.com/en/eset-research/operation-roundpress/Press/Media Coverage
Timeline
- Published
- Last Modified
- Status
- Analyzed
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