{"action":"Upgrade github.com/labstack/echo/v4 to 4.15.3 or later.","affected":[{"fixed":"4.15.3","introduced":"0"}],"component":"github.com/labstack/echo/v4","cve_ids":["CVE-2026-55677"],"ecosystem":"Go","epss":0.00431,"exploited":false,"fixed_versions":["4.15.3"],"ghsa_id":"GHSA-vfp3-v2gw-7wfq","id":"tcs_01M5KFP17M3WBFM9VC40MRVX78","modified_at":"2026-09-10T03:51:14.774124457Z","published_at":"2026-08-25T16:13:29Z","references":["https://osv.dev/vulnerability/GHSA-vfp3-v2gw-7wfq","https://github.com/labstack/echo/security/advisories/GHSA-vfp3-v2gw-7wfq","https://nvd.nist.gov/vuln/detail/CVE-2026-55677","https://github.com/labstack/echo/pull/3009","https://github.com/labstack/echo/pull/3011","https://github.com/labstack/echo/commit/8d1ae9d3360a71672418856d58753af25f2c3986","https://github.com/labstack/echo/commit/c3fa2a27ff92b2b8db360de614f999ef1da24725","https://github.com/labstack/echo","https://github.com/labstack/echo/releases/tag/v4.15.3","https://github.com/labstack/echo/releases/tag/v5.2.0"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"GHSA-vfp3-v2gw-7wfq#Go/github.com/labstack/echo/v4","url":"https://osv.dev/vulnerability/GHSA-vfp3-v2gw-7wfq"}],"summary":"Echo: Encoded slash (%2F) bypasses route-level protection and exposes static files"}