openziti zrok up to 2.0.2 Filesystem WriteStream path traversal

Summaryinfo

A vulnerability, which was classified as critical, was found in openziti zrok up to 2.0.2. The impacted element is the function WriteStream of the component Filesystem. The manipulation results in path traversal. This vulnerability is cataloged as CVE-2026-45576. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability classified as critical has been found in openziti zrok up to 2.0.2. Affected is the function WriteStream of the component Filesystem. The manipulation with an unknown input leads to a path traversal vulnerability. CWE is classifying the issue as CWE-23. The product uses external input to construct a pathname that should be within a restricted directory, but it does not properly neutralize sequences such as ".." that can resolve to a location that is outside of that directory. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

zrok is software for sharing web services, files, and network resources. From 0.4.23 until 2.0.3, `zrok2 copy` stores attacker-controlled WebDAV or zrok drive paths such as /../outside.txt in the source inventory and passes them to FilesystemTarget.WriteStream, allowing the sync pipeline to write files outside the selected local filesystem destination root. This issue is fixed in version 2.0.3.

The advisory is shared for download at github.com. This vulnerability is traded as CVE-2026-45576 since 05/12/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1006.

Upgrading to version 2.0.3 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-44973). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

• openziti

Name

• zrok

Version

• 2.0.0
• 2.0.1
• 2.0.2

Website

• Product: https://github.com/openziti/zrok/

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VulDB is the best source for vulnerability data and more expert information about this specific topic.

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