CVE-2026-45576

zrok copy writes attacker-controlled WebDAV paths outside the destination root

Alice runs zrok2 copy from a WebDAV or zrok drive controlled by Bob into a local filesystem target. Bob returns a DAV href such as /../outside.txt. The sync pipeline stores that path in the source inventory and passes it to FilesystemTarget.WriteStream, which joins it with the target root and creates the file outside Alice's selected directory.

Users given access to a zrok share may be able to traverse the directory tree arbitrarily with the sharing users credentials, allowing for sensitive information to be overwritten.

Input manipulates file paths to reach files outside the intended directory, such as configuration or credential files. Typical impact: unauthorized file read or write outside the intended directory.

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1. What is CVE-2026-45576? CVE-2026-45576 is a high-severity path traversal vulnerability in github.com/openziti/zrok/v2 (go), affecting versions < 2.0.3. It is fixed in 2.0.3. Input manipulates file paths to reach files outside the intended directory, such as configuration or credential files.
2. Which packages are affected by CVE-2026-45576?
   • github.com/openziti/zrok/v2 (go) (versions < 2.0.3)
   • github.com/openziti/zrok (go) (versions >= 0.4.23, <= 1.1.11)
3. Is there a fix for CVE-2026-45576? Yes. CVE-2026-45576 is fixed in 2.0.3. Upgrade to this version or later.
4. Is CVE-2026-45576 exploitable, and should I be worried? Whether CVE-2026-45576 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk. Get a demo
5. What actually determines whether CVE-2026-45576 is exploitable, and how bad it is? Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.
6. How do I fix CVE-2026-45576? Upgrade github.com/openziti/zrok/v2 to 2.0.3 or later.

Other vulnerabilities in github.com/openziti/zrok/v2