Vulnerability · Published May 8, 2026 · Assigned by GitHub_M

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

High 8.7

In plain English

A high-severity path traversal in zrok from openziti. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 26% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)8.7High

Exploit odds (30 days)0.3%top 73.8% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Go	github.com/openziti/zrok	no fix listed	GHSA-74m3-9qvm-rp9h
Go	github.com/openziti/zrok	no fix listed	GO-2026-5203
Go	github.com/openziti/zrok/v2	2.0.2	GHSA-74m3-9qvm-rp9h
Go	github.com/openziti/zrok/v2	2.0.2	GO-2026-5203

Affected products (as reported)

Vendor	Product	Versions
openziti	zrok	< 2.0.2

Weakness: CWE-61, CWE-22 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N

References

https://github.com/openziti/zrok/security/advisories/GHSA-74m3-9qvm-rp9h x_refsource_CONFIRM
https://github.com/openziti/zrok/commit/459bcfc1e121decae1b1d11c37ad94e4ed5bbf2e x_refsource_MISC
https://github.com/openziti/zrok/releases/tag/v2.0.2 x_refsource_MISC