{"cve":"CVE-2026-118655","nvd":{"published":"2026-10-28T20:17:22.723","modified":"2026-10-28T20:17:22.723","status":"Received","description":"Echo is a Go web framework. Prior to 4.15.3 and 5.2.0, middleware.Static can decode an already decoded Request.URL.Path a second time. Double-encoded separators can consequently be reconstructed before filesystem resolution. This can reach a file under a guarded route when the static middleware is registered globally. This issue is fixed in 4.15.3 and 5.2.0.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","score":5.9},"cwes":["CWE-174"],"references":["https://github.com/labstack/echo/commit/a9ede66a5a7196411131beb1ee801e75bbaf7ac6","https://github.com/labstack/echo/commit/c3fa2a27ff92b2b8db360de614f999ef1da24725","https://github.com/labstack/echo/issues/2599","https://github.com/labstack/echo/pull/3006","https://github.com/labstack/echo/releases/tag/v4.15.3"],"products":[],"source":"nvd","synced_at":"2026-10-28T20:41:45.883959281+00:00"},"epss":null,"kev":null,"osv":[{"id":"GHSA-xwq5-6cqp-vx96","url":"https://osv.dev/vulnerability/GHSA-xwq5-6cqp-vx96","summary":"Echo has a Static Middleware Double-Unescape Path Traversal","modified":"2026-10-28T21:15:04.922261839Z","packages":[{"ecosystem":"Go","name":"github.com/labstack/echo/v5","purl":"pkg:golang/github.com/labstack/echo/v5","ranges":["<5.2.0"],"fixed":["5.2.0"]},{"ecosystem":"Go","name":"github.com/labstack/echo/v4","purl":"pkg:golang/github.com/labstack/echo/v4","ranges":["<4.15.3"],"fixed":["4.15.3"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}