CVE-2026-42275— zrok: WebDAV drive backend follows symlinks outside DriveRoot, enabling host filesystem read/write
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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: NVD (National Vulnerability Database)
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: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
CWE-61
Source: NVD (National Vulnerability Database)
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
II. Public POCs for CVE-2026-42275
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- Release v2.0.2 · openziti/zrok · GitHubx_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2026-42275
IV. Related Vulnerabilities
Same vendor: openziti
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zrok has reflected XSS in GitHub OAuth callback via unsaniti - CVE-2025-27501
Server Side Request Forgery in Ziti Console - CVE-2025-27500
Cross Site Scripting potential in Ziti Console
Same weakness: CWE-61
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IObit Advanced SystemCare Service ASC.exe symlink - CVE-2026-43570
OpenClaw 2026.3.22 < 2026.4.5 - Symlink Traversal in Remote - CVE-2026-7397
NousResearch hermes-agent file_tools.py _check_sensitive_pat
V. Comments for CVE-2026-42275
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