CVE-2026-40302zrok has reflected XSS in GitHub OAuth callback via unsanitized refreshInterval error rendering
Updated under an hour ago ()
Does this affect you?
It affects openziti zrok and 1 other product. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
Do this next
Free account, 1 product
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.
- CVSS
- 6.1 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- Weakness (CWE)
- CWE-79, CWE-116
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- GitHub_M
- NVD analysis
- Analyzed
- Record last updated
- Apr 17, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
openziti zrok openziti:zrok (from the name) | before 2.0.1 | CNA record |
netfoundry zrok netfoundry:zrok | before 2.0.1 | NVD |
References
- https://github.com/openziti/zrok/security/advisories/GHSA-4fxq-2x3x-6xqxx-refsource-confirm, vendor-advisory
- https://github.com/openziti/zrok/releases/tag/v2.0.1x-refsource-misc, release-notes
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.