{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-118653","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-10-28T17:25:37.561Z","datePublished":"2026-10-28T19:42:05.556Z","dateUpdated":"2026-10-28T19:42:05.556Z"},"containers":{"cna":{"title":"Echo: Rate Limiter Bypass via Spoofed X-Forwarded-For Header in Default Configuration","problemTypes":[{"descriptions":[{"cweId":"CWE-290","lang":"en","description":"CWE-290: Authentication Bypass by Spoofing","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":5.3,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","version":"3.1"}}],"references":[{"name":"https://github.com/labstack/echo/security/advisories/GHSA-246p-cpwv-v3jq","tags":["x_refsource_CONFIRM"],"url":"https://github.com/labstack/echo/security/advisories/GHSA-246p-cpwv-v3jq"},{"name":"https://github.com/labstack/echo/commit/22e4b71109ef072ef011a489066ec662ca9565b2","tags":["x_refsource_MISC"],"url":"https://github.com/labstack/echo/commit/22e4b71109ef072ef011a489066ec662ca9565b2"},{"name":"https://github.com/labstack/echo/releases/tag/v5.1.0","tags":["x_refsource_MISC"],"url":"https://github.com/labstack/echo/releases/tag/v5.1.0"}],"affected":[{"vendor":"labstack","product":"echo","versions":[{"version":">= 4.0.0, < 5.1.0","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-10-28T19:42:05.556Z"},"descriptions":[{"lang":"en","value":"Echo is a Go web framework. From 4.0.0 until 5.1.0, Context.RealIP falls back to client-supplied X-Forwarded-For or X-Real-IP values when Echo.IPExtractor is unset, and the default RateLimiter uses that result as its client identifier. A remote attacker can rotate arbitrary forwarded-address values to obtain new rate-limit buckets and bypass IP-based throttling used for controls such as brute-force or request-volume protection. This issue is fixed in Echo v5.1.0."}],"source":{"advisory":"GHSA-246p-cpwv-v3jq","discovery":"UNKNOWN"}}}}