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Vulnerability Report: GO-2026-5887

CVE-2026-45045, GHSA-gcfq-8gqf-4876
Affects: github.com/gofiber/fiber/v3
Published: Jul 24, 2026

GoFiber Vulnerable to X-Real-IP Spoofing via Header.Add() in BalancerForward in github.com/gofiber/fiber

For detailed information about this vulnerability, visit https://github.com/gofiber/fiber/security/advisories/GHSA-gcfq-8gqf-4876.

Affected Packages

Path

Go Versions

Symbols
github.com/gofiber/fiber/v3/middleware/proxy

before v3.3.0
- Balancer
- BalancerForward

Aliases

References

Feedback

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