🛡️ CVE-2023-41338
🟡 CVSS 5.3 — Medium ✅ No Known Exploit CWE-670 NVD
5.3
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Fiber is an Express inspired web framework built in the go language. Versions of gofiber prior to 2.49.2 did not properly restrict access to localhost. This issue impacts users of our project who rely on the `ctx.IsFromLocal` method to restrict access to localhost requests. If exploited, it could allow unauthorized access to resources intended only for localhost. Setting `X-Forwarded-For: 127.0.0.1` in a request from a foreign host, will result in true for `ctx.IsFromLocal`. Access is limited to the scope of the affected process. This issue has been patched in version `2.49.2` with commit `b8c9ede6`. Users are advised to upgrade. There are no known workarounds to remediate this vulnerability without upgrading to the patched version.

Details

Severity MEDIUM
CVSS Score 5.3
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CWE CWE-670
Public Exploit ✅ No
Source NVD
Published 2023-09-08
Updated 2026-06-15
Modified 2024-11-21

Affected Packages

Software From version Fixed in
fiber — 2.49.2
github.com/gofiber/fiber — —
github.com/gofiber/fiber/v2 — —

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