Path Traversal in Netfoundry Zrok
CVE-2026-45576
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.
Vulnerability class: Path Traversal (Directory Traversal)
EPSS: 0.005 (40.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.
Affected products
- Netfoundry Zrok
- Openziti Zrok — versions >= 0.4.23, < 2.0.3
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Vendor Advisory)
- security-advisories@github.com (Patch, x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC, Release Notes)
Frequently asked questions
- What is CVE-2026-45576?
- CVE-2026-45576 is a high-severity vulnerability in Netfoundry Zrok, classified under Path Traversal. CVSS score: 7.5/10. Published 2026-07-16.
- How severe is CVE-2026-45576?
- High severity. CVSS v3 base score is 7.5 out of 10.