Zimbra Collaboration up to 10.1.16 Briefcase packages path traversal

CVSS Meta Temp Score
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CTI Interest Score
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4.1$0-$5k0.51

Summaryinfo

A vulnerability was found in Zimbra Collaboration up to 10.1.16 and classified as problematic. This impacts an unknown function of the component Briefcase. Executing a manipulation of the argument packages can lead to path traversal. This vulnerability is handled as CVE-2026-73573. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability has been found in Zimbra Collaboration up to 10.1.16 and classified as problematic. This vulnerability affects an unknown code of the component Briefcase. The manipulation of the argument packages with an unknown input leads to a path traversal vulnerability. The CWE definition for the vulnerability is CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. As an impact it is known to affect confidentiality. CVE summarizes:

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.

The advisory is shared for download at wiki.zimbra.com. This vulnerability was named CVE-2026-73573 since 08/12/2026. The exploitation appears to be easy. The attack can be initiated remotely. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1006.

Upgrading to version 10.1.17 eliminates this vulnerability.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 4.1

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Path traversal
CWE: CWE-22
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Collaboration 10.1.17

Timelineinfo

08/12/2026 CVE reserved
08/13/2026 +1 days Advisory disclosed
08/13/2026 +0 days VulDB entry created
08/13/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: wiki.zimbra.com
Status: Confirmed

CVE: CVE-2026-73573 (🔒)
GCVE (CVE): GCVE-0-2026-73573
GCVE (VulDB): GCVE-100-389596

Entryinfo

Created: 08/13/2026 17:42
Changes: 08/13/2026 17:42 (56)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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