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CVE-2026-73573

Quick assessment

Affected
Zimbra Collaboration
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 Zimbra Collaboration (ZCS) 10.1.17 版本之前，Zimbra Briefcase 文档编辑功能中存在一个路径遍历漏洞，该漏洞是由于对 packages 参数验证不当所致。经过身份验证的攻击者可以通过构造包含路径遍历序列的恶意请求来利用此漏洞，可能导致 Web 应用程序目录中的敏感文件被未授权访问和泄露。

CVSS 3.1 · Low EPSS 0.45% · P37

Possible ATT&CK Techniques 1 AI

T1530 · Data from Cloud Storage

Affected Version Matrix 1

VendorProduct Version RangeStatus
Zimbra Collaboration < 10.1.17 affected
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I. Basic Information for CVE-2026-73573

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
路径遍历：’../filedir’
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Zimbra Collaboration 0 ~ 10.1.17 -

II. Public POCs for CVE-2026-73573

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III. Intelligence Information for CVE-2026-73573

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Vendor Advisories for CVE-2026-73573 (1)

Same Patch Batch · Zimbra · 2026-08-13 · 7 CVEs total

CVE-2026-73570 8.9 HIGH Zimbra Collaboration 命令注入漏洞
CVE-2026-73576 6.3 MEDIUM Zimbra <10.1.17 OnlyOffice弱密钥生成致JWT伪造
CVE-2026-73572 6.1 MEDIUM Zimbra <10.1.17 存储型XSS漏洞
CVE-2026-73575 3.1 LOW ZCS<10.1.17 CSRF漏洞
CVE-2026-73571 3.1 LOW Zimbra Collaboration <10.1.17 授权绕过漏洞
CVE-2026-73574 3.1 LOW Zimbra<10.1.17经典Web客户端LFI漏洞

IV. Related Vulnerabilities

Same product: Collaboration
Same vendor: Zimbra
Same weakness: CWE-24

V. Comments for CVE-2026-73573

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