CVE-2026-45045

Description

Fiber is an Express inspired web framework written in Go. Prior to 3.3.0 and 2.52.14, the BalancerForward proxy helper in middleware/proxy/proxy.go uses Header.Add() instead of Header.Set() when injecting X-Real-IP, allowing an attacker-supplied first X-Real-IP value to be forwarded to upstream servers for logging, rate limiting, and access control. This issue is fixed in version 3.3.0 and 2.52.14.

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Produits concernés

• gofiber fiber

Scores CVSS

Faiblesses (CWE)

• CWE-290

Références

• https://github.com/gofiber/fiber/commit/1403cc8292da3220e9316960b4030cc722a0f396 Patch
• https://github.com/gofiber/fiber/commit/33c9501288ab47a429c8b5e701493f0c3c0af37d Patch
• https://github.com/gofiber/fiber/pull/4260 Issue TrackingPatch
• https://github.com/gofiber/fiber/pull/4495 Issue TrackingPatch
• https://github.com/gofiber/fiber/releases/tag/v2.52.14 Release Notes
• https://github.com/gofiber/fiber/releases/tag/v3.3.0 Release Notes
• https://github.com/gofiber/fiber/security/advisories/GHSA-gcfq-8gqf-4876 ExploitVendor Advisory

Ailleurs

• NVD
• CVE.org
• CIRCL Vulnerability-Lookup
• CERT-FR
• GitHub Advisories