{"id":"UBUNTU-CVE-2026-55677","details":"Echo is a Go web framework. Prior to 4.15.3 and 5.2.0, Echo's router and static file handler disagree on URL path decoding. The router matches routes using the raw encoded path (preserving %2F as-is), while StaticDirectoryHandler unescapes %2F to / before resolving filesystem paths. This allows an attacker to bypass route-level access controls and read static files without authorization. This vulnerability is fixed in 4.15.3 and 5.2.0.","modified":"2026-06-29T23:18:12.577889855Z","published":"2026-06-26T17:16:00Z","upstream":["CVE-2026-55677"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-55677"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-55677"},{"type":"REPORT","url":"https://github.com/labstack/echo/security/advisories/GHSA-vfp3-v2gw-7wfq"}],"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_version":"2.2.0-1","binary_name":"golang-github-labstack-echo.v2-dev"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-55677.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_name":"golang-github-labstack-echo.v3-dev","binary_version":"3.3.5-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-55677.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_name":"golang-github-labstack-echo-dev","binary_version":"4.2.1-2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-55677.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-2026-55677.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-2026-55677.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_name":"golang-github-labstack-echo-dev","binary_version":"4.11.1-2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-55677.json"}},{"package":{"name":"golang-github-labstack-echo","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/golang-github-labstack-echo?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.12.0-1"],"ecosystem_specific":{"binaries":[{"binary_version":"4.12.0-1","binary_name":"golang-github-labstack-echo-dev"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-55677.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_version":"4.12.0-1","binary_name":"golang-github-labstack-echo-dev"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-55677.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"},{"type":"Ubuntu","score":"medium"}]}