{"id":"CVE-2026-118650","state":"PUBLISHED","title":"Echo: middleware.Static: `%2F`-encoded path bypasses route/group middleware guarding a statically-served path","description":"Echo is a Go web framework. Prior to 4.16.0 and 5.4.0, a globally mounted middleware.Static instance can interpret an encoded request path differently from Echo's router because the router matches the still-encoded path while the static handler uses the decoded URL.Path. The advisory demonstrates an encoded slash resolving to a file under the static root through the global static middleware, but the source is internally inconsistent about whether a route or group guard protects the corresponding literal path in that global-mount configuration. This issue is fixed in 4.16.0 and 5.4.0.","publishedAt":"2026-10-28T19:25:02.952Z","updatedAt":"2026-10-28T19:25:02.952Z","severity":{"score":7.5,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["labstack echo"],"affected":[{"vendor":"labstack","product":"echo","versions":[{"version":">= 5.0.0, < 5.4.0","status":"affected"},{"version":"< 4.16.0","status":"affected"}]}],"references":["https://github.com/labstack/echo/security/advisories/GHSA-375p-5qhx-8wq4","https://github.com/labstack/echo/commit/b838391e2eade87ae7e5a09d7bb5087bec271ec1","https://github.com/labstack/echo/commit/fc410094b2f3415cf2bf5204082137b205bfd5af","https://github.com/labstack/echo/releases/tag/v4.16.0","https://github.com/labstack/echo/releases/tag/v5.4.0"],"weaknesses":["CWE-177","CWE-863"],"ingestedAt":"2026-10-29T20:10:52.580Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/118xxx/CVE-2026-118650.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-118650","state":"PUBLISHED","datePublished":"2026-10-28T19:25:02.952Z","dateUpdated":"2026-10-28T19:25:02.952Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-10-28T17:25:37.560Z"},"containers":{"cna":{"title":"Echo: middleware.Static: `%2F`-encoded path bypasses route/group middleware guarding a statically-served path","descriptions":[{"lang":"en","value":"Echo is a Go web framework. Prior to 4.16.0 and 5.4.0, a globally mounted middleware.Static instance can interpret an encoded request path differently from Echo's router because the router matches the still-encoded path while the static handler uses the decoded URL.Path. The advisory demonstrates an encoded slash resolving to a file under the static root through the global static middleware, but the source is internally inconsistent about whether a route or group guard protects the corresponding literal path in that global-mount configuration. This issue is fixed in 4.16.0 and 5.4.0."}],"affected":[{"vendor":"labstack","product":"echo","versions":[{"version":">= 5.0.0, < 5.4.0","status":"affected"},{"version":"< 4.16.0","status":"affected"}]}],"references":[{"url":"https://github.com/labstack/echo/security/advisories/GHSA-375p-5qhx-8wq4","name":"https://github.com/labstack/echo/security/advisories/GHSA-375p-5qhx-8wq4","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/labstack/echo/commit/b838391e2eade87ae7e5a09d7bb5087bec271ec1","name":"https://github.com/labstack/echo/commit/b838391e2eade87ae7e5a09d7bb5087bec271ec1","tags":["x_refsource_MISC"]},{"url":"https://github.com/labstack/echo/commit/fc410094b2f3415cf2bf5204082137b205bfd5af","name":"https://github.com/labstack/echo/commit/fc410094b2f3415cf2bf5204082137b205bfd5af","tags":["x_refsource_MISC"]},{"url":"https://github.com/labstack/echo/releases/tag/v4.16.0","name":"https://github.com/labstack/echo/releases/tag/v4.16.0","tags":["x_refsource_MISC"]},{"url":"https://github.com/labstack/echo/releases/tag/v5.4.0","name":"https://github.com/labstack/echo/releases/tag/v5.4.0","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-177","lang":"en","description":"CWE-177: Improper Handling of URL Encoding (Hex Encoding)","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-863","lang":"en","description":"CWE-863: Incorrect Authorization","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-10-28T19:25:02.952Z"},"source":{"advisory":"GHSA-375p-5qhx-8wq4","discovery":"UNKNOWN"}}}}}