Synacor · Zimbra Collaboration Suite (ZCS)
CVE-2024-27443
Synacor Zimbra Collaboration Suite (ZCS) Cross-Site Scripting (XSS) Vulnerability
Cos'è
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.
CISA: Zimbra Collaboration contains a cross-site scripting (XSS) vulnerability in the CalendarInvite feature of the Zimbra webmail classic user interface. An attacker can exploit this vulnerability via an email message containing a crafted calendar header, leading to the execution of arbitrary JavaScript code.
Cosa fare
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Scadenza per le agenzie federali USA: 9 giugno 2025
Altre falle sfruttate di Synacor
| Aggiunto | Vulnerabilità | Prodotto | Gravità | Probabilità di attacco |
|---|---|---|---|---|
| 21 ago 2026 | OS Command Injection | Zimbra Collaboration Suite (ZCS) | Alta 8,9 | 72% |
| 20 apr 2026 | Cross-site Scripting | Zimbra Collaboration Suite (ZCS) | Media 6,1 | 1,7% |
| 18 mar 2026 | Cross-Site Scripting | Zimbra Collaboration Suite (ZCS) | Alta 7,2 | 20% |
| 7 ott 2025 | Cross-site Scripting | Zimbra Collaboration Suite (ZCS) | Media 5,4 | 4,1% |
| 7 lug 2025 | Server-Side Request Forgery (SSRF) | Zimbra Collaboration Suite (ZCS) | Alta 7,5 | 81% |
| 25 feb 2025 | Cross-Site Scripting (XSS) | Zimbra Collaboration Suite (ZCS) | Critica 9,0 | 77% |
| 3 ott 2024 | Command Execution | Zimbra Collaboration Suite (ZCS) | Critica 10,0 | 99,9% |
| 27 lug 2023 | Cross-Site Scripting (XSS) | Zimbra Collaboration Suite (ZCS) | Media 6,1 | 49% |
Fonti: Known Exploited Vulnerabilities (CISA, pubblico dominio), CVE records (cve.org) e EPSS (FIRST). La probabilità di attacco è la stima EPSS che qualcuno provi a sfruttare la falla nei prossimi 30 giorni.