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CVE-2026-42275— zrok: WebDAV drive backend follows symlinks outside DriveRoot, enabling host filesystem read/write

Quick assessment

Affected
openziti zrok
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.

zrok是OpenZiti开源的一个安全的互联网共享工具。 zrok 2.0.2之前版本存在路径遍历漏洞，该漏洞源于WebDAV驱动器后端通过词法规范化限制路径遍历但未阻止符号链接跟随，可能导致远程WebDAV消费者读取或写入主机文件系统上的文件。

CVSS 8.7 · High EPSS 0.46% · P38

Affected Version Matrix 1

VendorProduct Version RangeStatus
openziti zrok < 2.0.2 affected
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I. Basic Information for CVE-2026-42275

Vulnerability Information
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Vulnerability Title
zrok: WebDAV drive backend follows symlinks outside DriveRoot, enabling host filesystem read/write
Source: CVE Program / CVE List V5
Vulnerability Description
zrok is software for sharing web services, files, and network resources. Prior to version 2.0.2, the zrok WebDAV drive backend (davServer.Dir) restricts path traversal through lexical normalization but does not prevent symlink following. When a symbolic link inside the shared DriveRoot points to a location outside that root, remote WebDAV consumers can read files and—on shares without OS-level permission restrictions—write or overwrite files anywhere on the host filesystem accessible to the zrok process. This issue has been patched in version 2.0.2.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
CWE-61
Source: CVE Program / CVE List V5
Vulnerability Title
zrok 路径遍历漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
zrok是OpenZiti开源的一个安全的互联网共享工具。 zrok 2.0.2之前版本存在路径遍历漏洞，该漏洞源于WebDAV驱动器后端通过词法规范化限制路径遍历但未阻止符号链接跟随，可能导致远程WebDAV消费者读取或写入主机文件系统上的文件。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
openziti zrok < 2.0.2 -

II. Public POCs for CVE-2026-42275

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III. Intelligence Information for CVE-2026-42275

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Patches & Fixes for CVE-2026-42275 (1)

Vendor Advisories for CVE-2026-42275 (1)

Vendor Pages for CVE-2026-42275 (1)

IV. Related Vulnerabilities

Same product: zrok
Same vendor: openziti
Same weakness: CWE-61

V. Comments for CVE-2026-42275

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