CVE-2026-73573
Received Received - Intake

Path Traversal in Zimbra Collaboration Suite

Publication date: 2026-08-13

Last updated on: 2026-08-13

Assigner: MITRE

Description
In Zimbra Collaboration (ZCS) before 10.1.17, a path traversal vulnerability exists in the Zimbra Briefcase document editing functionality due to improper validation of the packages parameter. An authenticated attacker can exploit this vulnerability by supplying a crafted path traversal sequence, potentially allowing unauthorized disclosure of sensitive files within the web application directory.

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Meta Information

Published
2026-08-13
Last Modified
2026-08-13
Generated
2026-08-13
AI Q&A
2026-08-13
EPSS Evaluated
N/A
NVD
CVE-2026-73573
EUVD
EUVD-2026-58072

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
zimbra zimbra_collaboration to 10.1.17 (exc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-24 The product uses external input to construct a pathname that should be within a restricted directory, but it does not properly neutralize "../" sequences that can resolve to a location that is outside of that directory.

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Executive Summary

This is a path traversal vulnerability in Zimbra Collaboration (ZCS) before version 10.1.17. It exists in the Briefcase document editing feature due to improper validation of the packages parameter. An authenticated attacker can use a crafted path traversal sequence to access sensitive files within the web application directory.

Detection Guidance

To detect this vulnerability, check the Zimbra version installed on your system. Compare it against version 10.1.17 or later. If your version is older, the system is likely vulnerable. No specific commands are provided in the context to actively detect exploitation attempts.

Impact Analysis

An attacker could exploit this to read sensitive files on the server, potentially exposing confidential data such as user credentials, configuration files, or other restricted information stored within the web application directory.

Compliance Impact

This vulnerability could lead to unauthorized access to personal or sensitive data, violating GDPR and HIPAA requirements for data protection and confidentiality. Organizations may face compliance violations, legal penalties, and reputational damage if exploited.

Mitigation Strategies

Immediately upgrade Zimbra Collaboration to version 10.1.17 or later to address the path traversal vulnerability. Ensure proper input validation is enforced for the packages parameter in the Briefcase document editing functionality.

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