An issue was discovered in Zimbra Collaboration (ZCS) 10.0 and 10.1. A stored cross-site scripting (XSS) vulnerability exists in the Zimbra Briefcase feature due to insufficient sanitization of specific uploaded file types. When a user opens a publicly shared Briefcase file containing malicious scripts, the embedded JavaScript executes in the context of the user's session. This allows an attacker to run arbitrary scripts, potentially leading to data exfiltration or other unauthorized actions on behalf of the victim user.

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History

Mon, 23 Mar 2026 14:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-79
Metrics cvssV3_1

{'score': 6.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Mon, 23 Mar 2026 10:00:00 +0000

Type Values Removed Values Added
First Time appeared Zimbra
Zimbra collaboration
Vendors & Products Zimbra
Zimbra collaboration

Fri, 20 Mar 2026 14:15:00 +0000

Type Values Removed Values Added
Description An issue was discovered in Zimbra Collaboration (ZCS) 10.0 and 10.1. A stored cross-site scripting (XSS) vulnerability exists in the Zimbra Briefcase feature due to insufficient sanitization of specific uploaded file types. When a user opens a publicly shared Briefcase file containing malicious scripts, the embedded JavaScript executes in the context of the user's session. This allows an attacker to run arbitrary scripts, potentially leading to data exfiltration or other unauthorized actions on behalf of the victim user.
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cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-03-23T13:38:46.271Z

Reserved: 2026-03-19T00:00:00.000Z

Link: CVE-2026-33370

cve-icon Vulnrichment

Updated: 2026-03-23T13:38:10.604Z

cve-icon NVD

Status : Received

Published: 2026-03-20T14:16:16.127

Modified: 2026-03-23T14:16:34.180

Link: CVE-2026-33370

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-03-23T09:53:36Z

Weaknesses