{"id":"EUVD-2026-23972","revision":"c7fb762aca054943b377ce889f400b36","records":[{"revision":"c7fb762aca054943b377ce889f400b36","observedAt":"2026-10-28T04:52:32.028+00:00","statement":{"source":"euvd","id":"EUVD-2026-23972","aliases":["CVE-2026-34403"],"title":"Nginx UI is a web user interface for the Nginx web server. Prior to version 2.3.5, all WebSocket endpoints in nginx-ui use a gorilla/websocket Upgrader with CheckOrigin unconditionally returning true, allowing Cross-Site WebSocket Hijacking…","description":"Nginx UI is a web user interface for the Nginx web server. Prior to version 2.3.5, all WebSocket endpoints in nginx-ui use a gorilla/websocket Upgrader with CheckOrigin unconditionally returning true, allowing Cross-Site WebSocket Hijacking (CSWSH). Combined with the fact that authentication tokens are stored in browser cookies (set via JavaScript without HttpOnly or explicit SameSite attributes), a malicious webpage can establish authenticated WebSocket connections to the nginx-ui instance when a logged-in administrator visits the attacker-controlled page. Version 2.3.5 patches the issue.","state":0,"publishedAt":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:P","score":5.5,"severity":null}],"references":["https://github.com/0xJacky/nginx-ui/security/advisories/GHSA-78mf-482w-62qj","https://github.com/0xJacky/nginx-ui/releases/tag/v2.3.5"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-23972","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Apr 20, 2026, 8:16:47 PM","dateUpdated":"Apr 21, 2026, 1:36:46 PM"},"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-2026-23972","identifiers":["EUVD-2026-23972","CVE-2026-34403"]},"retained":false,"historicalAffected":[]}],"coverage":[]}