← Back to CVEs

CVE-2026-33370

MEDIUM

6.1

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.

CVE Details

CVSS v3.1 Score6.1

SeverityMEDIUM

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionREQUIRED

Published3/20/2026

Last Modified4/1/2026

Sourcenvd

Honeypot Sightings0

Affected Products

synacor:zimbra_collaboration_suite

Weaknesses (CWE)

CWE-79

References

https://wiki.zimbra.com/wiki/Security_Center(cve@mitre.org)

https://wiki.zimbra.com/wiki/Zimbra_Releases/10.1.16#Security_Fixes(cve@mitre.org)

https://wiki.zimbra.com/wiki/Zimbra_Responsible_Disclosure_Policy(cve@mitre.org)

https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories(cve@mitre.org)

IOC Correlations

No correlations recorded

This product uses data from the NVD API but is not endorsed or certified by the NVD.