{"id":"UBUNTU-CVE-2026-118657","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.","modified":"2026-10-29T20:04:32.634705226Z","published":"2026-10-29T00:00:00Z","upstream":["CVE-2026-118657"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-118657"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-118657"},{"type":"REPORT","url":"https://github.com/labstack/echo/commit/b838391e2eade87ae7e5a09d7bb5087bec271ec1"},{"type":"REPORT","url":"https://github.com/labstack/echo/commit/fc410094b2f3415cf2bf5204082137b205bfd5af"},{"type":"REPORT","url":"https://github.com/labstack/echo/releases/tag/v4.16.0"},{"type":"REPORT","url":"https://github.com/labstack/echo/releases/tag/v5.4.0"},{"type":"REPORT","url":"https://github.com/labstack/echo/security/advisories/GHSA-2ffq-g2xg-c22p"}],"affected":[{"package":{"name":"golang-github-labstack-echo.v2","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/golang-github-labstack-echo.v2?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.2.0-1"],"ecosystem_specific":{"binaries":[{"binary_name":"golang-github-labstack-echo.v2-dev","binary_version":"2.2.0-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-118657.json"}},{"package":{"name":"golang-github-labstack-echo.v3","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/golang-github-labstack-echo.v3?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.3.5-1"],"ecosystem_specific":{"binaries":[{"binary_version":"3.3.5-1","binary_name":"golang-github-labstack-echo.v3-dev"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-118657.json"}},{"package":{"name":"golang-github-labstack-echo","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/golang-github-labstack-echo?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.2.1-2"],"ecosystem_specific":{"binaries":[{"binary_version":"4.2.1-2","binary_name":"golang-github-labstack-echo-dev"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-118657.json"}},{"package":{"name":"golang-github-labstack-echo.v2","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/golang-github-labstack-echo.v2?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.2.0-2"],"ecosystem_specific":{"binaries":[{"binary_name":"golang-github-labstack-echo.v2-dev","binary_version":"2.2.0-2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-118657.json"}},{"package":{"name":"golang-github-labstack-echo.v3","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/golang-github-labstack-echo.v3?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.3.10-1"],"ecosystem_specific":{"binaries":[{"binary_version":"3.3.10-1","binary_name":"golang-github-labstack-echo.v3-dev"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-118657.json"}},{"package":{"name":"golang-github-labstack-echo","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/golang-github-labstack-echo?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.11.1-2"],"ecosystem_specific":{"binaries":[{"binary_version":"4.11.1-2","binary_name":"golang-github-labstack-echo-dev"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-118657.json"}},{"package":{"name":"golang-github-labstack-echo","ecosystem":"Ubuntu:26.10","purl":"pkg:deb/ubuntu/golang-github-labstack-echo?arch=source&distro=stonking"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.12.0-1"],"ecosystem_specific":{"binaries":[{"binary_name":"golang-github-labstack-echo-dev","binary_version":"4.12.0-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-118657.json"}},{"package":{"name":"golang-github-labstack-echo","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/golang-github-labstack-echo?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.12.0-1"],"ecosystem_specific":{"binaries":[{"binary_name":"golang-github-labstack-echo-dev","binary_version":"4.12.0-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-118657.json"}}],"schema_version":"1.9.2","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:L/A:N"},{"type":"Ubuntu","score":"medium"}]}