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    <lastBuildDate>Wed, 07 Oct 2026 12:44:18 +0000</lastBuildDate>
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      <title>CVE-2026-45045 — Fiber: X-Real-IP Spoofing via Header.Add() in BalancerForward</title>
      <link>https://cve.radiocsirt.org/vuln/cve-2026-45045</link>
      <description>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; gofiber fiber&lt;/p&gt;
&lt;p&gt;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.&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; gofiber fiber&lt;/p&gt;
&lt;p&gt;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.&lt;/p&gt;</content:encoded>
      <guid isPermaLink="false">https://cve.radiocsirt.org/vuln/cve-2026-45045</guid>
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