{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-55677","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-06-17T00:05:03.778Z","datePublished":"2026-06-26T16:15:55.633Z","dateUpdated":"2026-06-26T16:50:57.019Z"},"containers":{"cna":{"title":"Echo: Encoded slash (%2F) bypasses route-level protection and exposes static files","problemTypes":[{"descriptions":[{"cweId":"CWE-22","lang":"en","description":"CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')","type":"CWE"}]}],"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"}}],"references":[{"name":"https://github.com/labstack/echo/security/advisories/GHSA-vfp3-v2gw-7wfq","tags":["x_refsource_CONFIRM"],"url":"https://github.com/labstack/echo/security/advisories/GHSA-vfp3-v2gw-7wfq"}],"affected":[{"vendor":"labstack","product":"echo","versions":[{"version":"< 4.15.3","status":"affected"},{"version":">= 5.0.0, < 5.2.0","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-06-26T16:15:55.633Z"},"descriptions":[{"lang":"en","value":"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."}],"source":{"advisory":"GHSA-vfp3-v2gw-7wfq","discovery":"UNKNOWN"}},"adp":[{"references":[{"url":"https://github.com/labstack/echo/security/advisories/GHSA-vfp3-v2gw-7wfq","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-06-26T16:50:52.168170Z","id":"CVE-2026-55677","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-06-26T16:50:57.019Z"}}]}}