6.1

CVE-2024-27443

Warnung
Medienbericht
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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Zimbra ≫ Collaboration Version >= 10.0.0 < 10.0.7
Zimbra ≫ Collaboration Version 9.0.0 Update -
Zimbra ≫ Collaboration Version 9.0.0 Update p0
Zimbra ≫ Collaboration Version 9.0.0 Update p1
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Zimbra ≫ Collaboration Version 9.0.0 Update p24
Zimbra ≫ Collaboration Version 9.0.0 Update p24.1
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Zimbra ≫ Collaboration Version 9.0.0 Update p7.1
Zimbra ≫ Collaboration Version 9.0.0 Update p8
Zimbra ≫ Collaboration Version 9.0.0 Update p9

19.05.2025: CISA Known Exploited Vulnerabilities (KEV) Catalog

Synacor Zimbra Collaboration Suite (ZCS) Cross-Site Scripting (XSS) Vulnerability

Schwachstelle

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.

Beschreibung

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Erforderliche Maßnahmen
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 23.63% 0.976
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
NIST 6.1 2.8 2.7
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CISA-ADP 6.1 2.8 2.7
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

Für Zugriff zu Vulnerability Intelligence ist ein VulnDex Zugang erforderlich.
VulnDex Intel
Media Report
11.07.2026 09:39
https://wiki.zimbra.com/wiki/Zimbra_Releases/10.0.7#Security_Fixes
Release Notes
https://wiki.zimbra.com/wiki/Zimbra_Releases/9.0.0/P39#Security_Fixes
Release Notes
https://www.welivesecurity.com/en/eset-research/operation-roundpress/
Press/Media Coverage
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-27443
US Government Resource