MEDIUM 5.3 NVD
CVE-2026-118653
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 un
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.
References
- https://github.com/labstack/echo/commit/22e4b71109ef072ef011a489066ec662ca9565b2
- https://github.com/labstack/echo/releases/tag/v5.1.0
- https://github.com/labstack/echo/security/advisories/GHSA-246p-cpwv-v3jq
This medium severity vulnerability with a CVSS score of 5.3 was published on 2026-10-28 via NVD.
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