zrok is software for sharing web services, files, and network resources. Prior to version 2.0.1, the proxyUi template engine uses Go's text/template (which performs no HTML escaping) instead of html/template. The GitHub OAuth callback handlers in both publicProxy and dynamicProxy embed the attacker-controlled refreshInterval query parameter verbatim into an error message when time.ParseDuration fails, and render that error unescaped into HTML. An attacker can deliver a crafted login URL to a victim; after the victim completes the GitHub OAuth flow, the callback page executes arbitrary JavaScript in the OAuth server's origin. Version 2.0.1 patches the issue.
References
| Link | Resource |
|---|---|
| https://github.com/openziti/zrok/releases/tag/v2.0.1 | Release Notes |
| https://github.com/openziti/zrok/security/advisories/GHSA-4fxq-2x3x-6xqx | Vendor Advisory |
Configurations
History
23 Apr 2026, 18:32
| Type | Values Removed | Values Added |
|---|---|---|
| First Time |
Netfoundry
Netfoundry zrok |
|
| References | () https://github.com/openziti/zrok/releases/tag/v2.0.1 - Release Notes | |
| References | () https://github.com/openziti/zrok/security/advisories/GHSA-4fxq-2x3x-6xqx - Vendor Advisory | |
| CPE | cpe:2.3:a:netfoundry:zrok:*:*:*:*:*:*:*:* |
17 Apr 2026, 21:16
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-04-17 21:16
Updated : 2026-04-23 18:32
NVD link : CVE-2026-40302
Mitre link : CVE-2026-40302
CVE.ORG link : CVE-2026-40302
JSON object : View
Products Affected
netfoundry
- zrok