Path Traversal in Netfoundry Zrok
CVE-2026-45568
zrok is software for sharing web services, files, and network resources. Prior to 2.0.3, zrok's Python SDK ProxyShare Flask proxy route accepts an absolute URL in the request path and passes it to urllib.parse.urljoin, allowing the requested path to replace the configured target host and causing requests.request to return a server-side response from an attacker-chosen URL. This issue is fixed in version 2.0.3.
Vulnerability class: Path Traversal (Directory Traversal)
EPSS: 0.005 (43.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.
Affected products
- Netfoundry Zrok
- Openziti Zrok — versions >= 0.4.47, < 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-2026-45568?
- CVE-2026-45568 is a critical-severity vulnerability in Netfoundry Zrok, classified under Path Traversal. CVSS score: 9.1/10. Published 2026-07-16.
- How severe is CVE-2026-45568?
- Critical severity. CVSS v3 base score is 9.1 out of 10.