{"id":"CVE-2026-118651","revision":"3ee896e2792f47689d552b6e91f8f44a","records":[{"revision":"3ee896e2792f47689d552b6e91f8f44a","observedAt":"2026-10-30T21:45:28.35+00:00","statement":{"source":"nvd","id":"CVE-2026-118651","aliases":[],"title":"Echo is a Go web framework. From 4.0.0 until 5.4.0, the Proxy middleware can preserve an attacker-supplied X-Real-IP header and forward it to an upstream service when Echo.IPExtractor is not configured. A remote client can therefore make up…","description":"Echo is a Go web framework. From 4.0.0 until 5.4.0, the Proxy middleware can preserve an attacker-supplied X-Real-IP header and forward it to an upstream service when Echo.IPExtractor is not configured. A remote client can therefore make upstream services receive a spoofed client address, undermining IP-based access controls, rate limiting, audit logging, or geographic restrictions that trust Echo's forwarded identity. This issue is fixed in Echo 5.4.0.","state":0,"publishedAt":"2026-10-28T20:17:22.073+00:00","modifiedAt":"2026-10-29T21:17:16.26+00:00","affected":[],"metrics":[{"system":"CVSS 3.1 · security-advisories@github.com · Secondary","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","score":5.3,"severity":"MEDIUM"}],"references":["https://github.com/labstack/echo/commit/fc410094b2f3415cf2bf5204082137b205bfd5af","https://github.com/labstack/echo/releases/tag/v5.4.0","https://github.com/labstack/echo/security/advisories/GHSA-99jh-6h7p-pp36"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-118651","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Undergoing Analysis","weaknesses":["CWE-346"],"productCriteria":[],"sourceDates":{"published":"2026-10-28T20:17:22.073","lastModified":"2026-10-29T21:17:16.260"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-118651","identifiers":["CVE-2026-118651"]},"retained":false,"historicalAffected":[]}],"coverage":[]}