Synacor · Zimbra Collaboration Suite (ZCS)
CVE-2024-27443
Synacor Zimbra Collaboration Suite (ZCS) Cross-Site Scripting (XSS) Vulnerability
Qué es
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.
Qué hacer
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Plazo para las agencias federales de EE. UU.: 9 de junio de 2025
Más fallos explotados de Synacor
| Añadido | Vulnerabilidad | Producto | Gravedad | Prob. de ataque |
|---|---|---|---|---|
| 21 ago 2026 | OS Command Injection | Zimbra Collaboration Suite (ZCS) | Alto 8,9 | 72% |
| 20 abr 2026 | Cross-site Scripting | Zimbra Collaboration Suite (ZCS) | Media 6,1 | 1,7% |
| 18 mar 2026 | Cross-Site Scripting | Zimbra Collaboration Suite (ZCS) | Alto 7,2 | 20% |
| 7 oct 2025 | Cross-site Scripting | Zimbra Collaboration Suite (ZCS) | Media 5,4 | 4,1% |
| 7 jul 2025 | Server-Side Request Forgery (SSRF) | Zimbra Collaboration Suite (ZCS) | Alto 7,5 | 81% |
| 25 feb 2025 | Cross-Site Scripting (XSS) | Zimbra Collaboration Suite (ZCS) | Crítica 9,0 | 77% |
| 3 oct 2024 | Command Execution | Zimbra Collaboration Suite (ZCS) | Crítica 10,0 | 99,9% |
| 27 jul 2023 | Cross-Site Scripting (XSS) | Zimbra Collaboration Suite (ZCS) | Media 6,1 | 49% |
Fuentes: Known Exploited Vulnerabilities (CISA, dominio público), CVE records (cve.org) y EPSS (FIRST). La probabilidad de ataque es la estimación EPSS de que alguien intente explotar el fallo en los próximos 30 días.