{"id":"EUVD-2026-23547","revision":"92b6384fad7346c7b48e5a1465d4e371","records":[{"revision":"92b6384fad7346c7b48e5a1465d4e371","observedAt":"2026-10-30T06:00:23.738+00:00","statement":{"source":"euvd","id":"EUVD-2026-23547","aliases":["CVE-2026-40302","GHSA-4fxq-2x3x-6xqx"],"title":"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 handl…","description":"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.","state":0,"publishedAt":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","score":6.1,"severity":null}],"references":["https://github.com/openziti/zrok/security/advisories/GHSA-4fxq-2x3x-6xqx","https://github.com/openziti/zrok/releases/tag/v2.0.1"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-23547","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Apr 17, 2026, 8:56:08 PM","dateUpdated":"Apr 18, 2026, 3:07:10 AM"},"relatedAdvisories":[],"note":"EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON."},"key":"euvd:EUVD-2026-23547","identifiers":["EUVD-2026-23547","CVE-2026-40302","GHSA-4fxq-2x3x-6xqx"]},"retained":false,"historicalAffected":[]}],"coverage":[]}