{"schema":"threatline.record/2","record":{"id":"CVE-2026-118657","aliases":["GHSA-2ffq-g2xg-c22p"],"summary":"Echo: HTTPS Redirect and HSTS Bypass via Unconditional Trust of Forwarded Scheme Headers","details":"Echo is a Go web framework. Prior to 4.16.0 and 5.4.0, Context.Scheme unconditionally trusts forwarded scheme headers from any client. A client that reaches Echo directly over plaintext HTTP can claim an HTTPS scheme and bypass HTTPSRedirect because the request is treated as already secure. Separately, behind a TLS-terminating proxy that passes an attacker-controlled header, a claimed HTTP scheme can suppress the Strict-Transport-Security header even though the browser receives the response over HTTPS. The practical risk is reduced when a trusted proxy overwrites the headers and direct backend access is prevented, but the framework previously had no trusted-source configuration for this decision. This issue is fixed in 4.16.0 and 5.4.0.","categories":["Unclassified"],"product":"echo","vendor":"labstack","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-118657","source_modified_at":"2026-10-28T20:14:09.883Z","fetched_at":"2026-10-28T20:58:01.013507Z","product":"echo","vendor":"labstack","versions":[{"version":">= 5.0.0, < 5.4.0","status":"affected"},{"version":"< 4.16.0","status":"affected"}],"defaultStatus":null}],"fixed_versions":[],"cvss":5.9,"severity":"Medium","kev":{"listed":false},"epss":{"probability":null,"percentile":null,"score_date":null},"published_at":"2026-10-28T20:14:09.883Z","modified_at":"2026-10-28T20:14:09.883Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-118657","fetched_at":"2026-10-28T20:58:01.013507Z","source_modified_at":"2026-10-28T20:14:09.883Z"}],"sources":["CVE List"],"references":[{"source":"CVE List","url":"https://github.com/labstack/echo/security/advisories/GHSA-2ffq-g2xg-c22p","tags":["x_refsource_CONFIRM"]},{"source":"CVE List","url":"https://github.com/labstack/echo/commit/b838391e2eade87ae7e5a09d7bb5087bec271ec1","tags":["x_refsource_MISC"]},{"source":"CVE List","url":"https://github.com/labstack/echo/commit/fc410094b2f3415cf2bf5204082137b205bfd5af","tags":["x_refsource_MISC"]},{"source":"CVE List","url":"https://github.com/labstack/echo/releases/tag/v4.16.0","tags":["x_refsource_MISC"]},{"source":"CVE List","url":"https://github.com/labstack/echo/releases/tag/v5.4.0","tags":["x_refsource_MISC"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-28T20:14:09.883Z","content_hash":"4de3e3ece2daec964afb53f172bbbbe16572b6d384167ec9972d77d227bad2f0"}}