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.
This vulnerability carries a MEDIUM severity rating with a CVSS v3.1 score of 6.1, indicating it can be exploited remotely over the network with relatively low complexity though user interaction is required and does not require pre-existing privileges . The vulnerability impacts limited data confidentiality, limited integrity, for affected systems. Impacting 1 product from zimbra organizations running these solutions should prioritize assessment and patching.
Reported in 2024, this vulnerability emerged during an era marked by increased sophistication in supply chain attacks, cloud infrastructure vulnerabilities, and software-as-a-service (SaaS) security challenges. Security practices during this period emphasized zero-trust architectures, container security, and API protection.
2024-08-12T15:15:20.283
2025-10-31T12:49:00.460
Analyzed
CVSSv3.1: 6.1 (MEDIUM)
| Type | Vendor | Product | Version/Range | Vulnerable? |
|---|---|---|---|---|
| Application | zimbra | collaboration | < 10.0.7 | Yes |
| Application | zimbra | collaboration | 9.0.0 | Yes |
| Application | zimbra | collaboration | 9.0.0 | Yes |
| Application | zimbra | collaboration | 9.0.0 | Yes |
| Application | zimbra | collaboration | 9.0.0 | Yes |
| Application | zimbra | collaboration | 9.0.0 | Yes |
| Application | zimbra | collaboration | 9.0.0 | Yes |
| Application | zimbra | collaboration | 9.0.0 | Yes |
| Application | zimbra | collaboration | 9.0.0 | Yes |
| Application | zimbra | collaboration | 9.0.0 | Yes |
| Application | zimbra | collaboration | 9.0.0 | Yes |
| Application | zimbra | collaboration | 9.0.0 | Yes |
| Application | zimbra | collaboration | 9.0.0 | Yes |
| Application | zimbra | collaboration | 9.0.0 | Yes |
| Application | zimbra | collaboration | 9.0.0 | Yes |
| Application | zimbra | collaboration | 9.0.0 | Yes |
| Application | zimbra | collaboration | 9.0.0 | Yes |
| Application | zimbra | collaboration | 9.0.0 | Yes |
| Application | zimbra | collaboration | 9.0.0 | Yes |
| Application | zimbra | collaboration | 9.0.0 | Yes |
| Application | zimbra | collaboration | 9.0.0 | Yes |
| Application | zimbra | collaboration | 9.0.0 | Yes |
| Application | zimbra | collaboration | 9.0.0 | Yes |
| Application | zimbra | collaboration | 9.0.0 | Yes |
| Application | zimbra | collaboration | 9.0.0 | Yes |
| Application | zimbra | collaboration | 9.0.0 | Yes |
| Application | zimbra | collaboration | 9.0.0 | Yes |
| Application | zimbra | collaboration | 9.0.0 | Yes |
| Application | zimbra | collaboration | 9.0.0 | Yes |
| Application | zimbra | collaboration | 9.0.0 | Yes |
| Application | zimbra | collaboration | 9.0.0 | Yes |
| Application | zimbra | collaboration | 9.0.0 | Yes |
| Application | zimbra | collaboration | 9.0.0 | Yes |
| Application | zimbra | collaboration | 9.0.0 | Yes |
| Application | zimbra | collaboration | 9.0.0 | Yes |
| Application | zimbra | collaboration | 9.0.0 | Yes |
| Application | zimbra | collaboration | 9.0.0 | Yes |
| Application | zimbra | collaboration | 9.0.0 | Yes |
SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For zimbra's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.