{"id":"CVE-2026-55677","sourceIdentifier":"security-advisories@github.com","published":"2026-06-26T17:16:34.203","lastModified":"2026-06-26T20:20:22.420","vulnStatus":"Deferred","cveTags":[],"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."}],"affected":[{"source":"security-advisories@github.com","affectedData":[{"vendor":"labstack","product":"echo","versions":[{"version":"< 4.15.3","status":"affected"},{"version":">= 5.0.0, < 5.2.0","status":"affected"}]}]}],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","baseScore":7.5,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"NONE","availabilityImpact":"NONE"},"exploitabilityScore":3.9,"impactScore":3.6}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-06-26T16:50:52.168170Z","id":"CVE-2026-55677","options":[{"exploitation":"poc"},{"automatable":"yes"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"security-advisories@github.com","type":"Secondary","description":[{"lang":"en","value":"CWE-22"}]}],"references":[{"url":"https://github.com/labstack/echo/security/advisories/GHSA-vfp3-v2gw-7wfq","source":"security-advisories@github.com"},{"url":"https://github.com/labstack/echo/security/advisories/GHSA-vfp3-v2gw-7wfq","source":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}]}