Zimbra Cb 10.1.17 path traversal in Briefcase edit
CVE-2026-73573 Published on August 13, 2026
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.
Vulnerability Analysis
CVE-2026-73573 can be exploited with network access, and requires small amount of user privileges. This vulnerability is consided to have a high level of attack complexity. The potential impact of an exploit of this vulnerability is considered to have a small impact on confidentiality, a small impact on integrity and availability.
Weakness Type
Path Traversal: '../filedir'
The software 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.
Products Associated with CVE-2026-73573
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Affected Versions
Zimbra Collaboration:- Before 10.1.17 is affected.