CVE-2026-73573: CWE-24 Path Traversal: '../filedir' in Zimbra Collaboration
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.
AI Analysis
Technical Summary
CVE-2026-73573 is a path traversal vulnerability in Zimbra Collaboration (ZCS) versions prior to 10.1.17. The issue arises from insufficient validation of the 'packages' parameter in the Briefcase document editing functionality. An authenticated attacker can exploit this by providing a crafted path traversal sequence (e.g., '../filedir'), potentially accessing sensitive files within the web application directory that should otherwise be restricted. The vulnerability is classified under CWE-24 (Path Traversal).
Potential Impact
The vulnerability allows an authenticated attacker to read sensitive files within the web application directory that are normally inaccessible. The impact is limited to confidentiality (low impact) with no effect on integrity or availability. There are no known exploits in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official fix or patch information is provided, users should monitor Zimbra's advisories for updates. In the meantime, restrict access to the affected functionality to trusted users and consider additional input validation controls if possible.
CVE-2026-73573: CWE-24 Path Traversal: '../filedir' in Zimbra Collaboration
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.
CVSS v3.1
Score 3.1low
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-73573 is a path traversal vulnerability in Zimbra Collaboration (ZCS) versions prior to 10.1.17. The issue arises from insufficient validation of the 'packages' parameter in the Briefcase document editing functionality. An authenticated attacker can exploit this by providing a crafted path traversal sequence (e.g., '../filedir'), potentially accessing sensitive files within the web application directory that should otherwise be restricted. The vulnerability is classified under CWE-24 (Path Traversal).
Potential Impact
The vulnerability allows an authenticated attacker to read sensitive files within the web application directory that are normally inaccessible. The impact is limited to confidentiality (low impact) with no effect on integrity or availability. There are no known exploits in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official fix or patch information is provided, users should monitor Zimbra's advisories for updates. In the meantime, restrict access to the affected functionality to trusted users and consider additional input validation controls if possible.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mitre
- Date Reserved
- 2026-08-12T21:54:20.822Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a7de5d0bf8831d5396651c4
Added to database: 08/13/2026, 15:42:08 UTC
Last enriched: 08/13/2026, 15:58:14 UTC
Last updated: 08/13/2026, 16:27:22 UTC
Views: 4
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.