{"id":"ghsa-ghsa-v753-g4cw-jm48","seq":2056969,"kind":"advisory","title":"Echo has Open Redirect via Control-Character Prefix Defeating sanitizeURI","url":"https://github.com/advisories/GHSA-v753-g4cw-jm48","permalink":"https://vulnpulse.app/items/ghsa-ghsa-v753-g4cw-jm48","summary":"影響: go:github.com/labstack/echo/v5 < 5.4.0 → 5.4.0, go:github.com/labstack/echo/v4 < 4.16.0 → 4.16.0\nEcho's dedicated open-redirect guard, sanitizeURI, decides whether a redirect target is a local path by inspecting exactly two byte positions: uri[0] and uri[1]. If the value begins with a control character such as a tab or a newline, followed by a separator pair, the guard does not fire and the value is written to the Location header unchanged. Browsers remove tab and newline characters from URLs before parsing them, and treat a backslash as a forward slash for HTTP and HTTPS URLs. A Location…","severity":"medium","techs":["go","github"],"cves":["CVE-2026-118656"],"tags":["GHSA-v753-g4cw-jm48","github.com/labstack/echo/v5","github.com/labstack/echo/v4"],"source":{"id":"ghsa","name":"GitHub Advisory Database"},"published_at":"2026-10-28T21:04:22.000Z","fetched_at":"2026-10-29T00:48:52.653Z"}