{"action":"Upgrade github.com/labstack/echo/v4 to 4.16.1 or later.","affected":[{"fixed":"4.16.1","introduced":"4.0.0"}],"component":"github.com/labstack/echo/v4","cve_ids":[],"ecosystem":"Go","exploited":false,"fixed_versions":["4.16.1"],"ghsa_id":"GHSA-cxf3-9h37-7rr8","id":"tcs_01M5NAT05SSHY06T84FNPV2611","modified_at":"2026-10-23T21:00:06.245007883Z","published_at":"2026-10-23T20:49:37Z","references":["https://osv.dev/vulnerability/GHSA-cxf3-9h37-7rr8","https://github.com/labstack/echo/security/advisories/GHSA-cxf3-9h37-7rr8","https://github.com/labstack/echo/commit/1855061e572ae9dab727c811d8382f266bfbaaec","https://github.com/labstack/echo/commit/3fb0ba7e17645bb65611e2a08875d0a2f65c421f","https://github.com/labstack/echo","https://github.com/labstack/echo/releases/tag/v4.16.1","https://github.com/labstack/echo/releases/tag/v5.4.1"],"severity":{"label":"critical"},"sources":[{"source":"osv","source_id":"GHSA-cxf3-9h37-7rr8","url":"https://osv.dev/vulnerability/GHSA-cxf3-9h37-7rr8"}],"summary":"Echo: Rejected WebSocket upgrades can bypass Echo route-level access controls"}