Vulnerability Description
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.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
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
FAQ
What is CVE-2026-118653?
CVE-2026-118653 is a vulnerability with a CVSS score of 5.3 (MEDIUM). 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 th...
How severe is CVE-2026-118653?
CVE-2026-118653 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-118653?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.