CVE-2026-42275

zrok: WebDAV drive backend follows symlinks outside DriveRoot, enabling host filesystem read/write

Published May 8, 2026 CVSS 3.1 · 8.7 High EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Github GHSA Github GHSA GHSA-74m3-9qvm-rp9h zrok: WebDAV drive backend follows symlinks outside DriveRoot, enabling host filesystem read/write
History
Type Values Removed Values Added
First Time appeared Netfoundry
Netfoundry zrok
CPEs cpe:2.3:a:netfoundry:zrok:*:*:*:*:*:*:*:*
Vendors & Products Netfoundry
Netfoundry zrok
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Openziti
Openziti zrok
Vendors & Products Openziti
Openziti zrok
Type Values Removed Values Added
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.
Title zrok: WebDAV drive backend follows symlinks outside DriveRoot, enabling host filesystem read/write
Weaknesses CWE-22
CWE-61
References
Metrics cvssV3_1

{'score': 8.7, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
May 8, 2026, 12:13 PM
Reserved
Apr 26, 2026, 11:53 AM
Status
Analyzed
Published
May 8, 2026, 4:16 AM
Modified
Oct 26, 2026, 8:10 PM