CVE-2026-25891

Fiber is an Express inspired web framework written in Go. A Path Traversal (CWE-22) vulnerability in Fiber allows a remote attacker to bypass the static middleware sanitizer and read arbitrary files on the server file system on Windows. This affects Fiber v3 through version 3.0.0. This has been patched in Fiber v3 version 3.1.0.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/gofiber/fiber/commit/59133702301c2ab7b776dd123b474cbd995f2c86	Patch
https://github.com/gofiber/fiber/pull/4064	Exploit Issue Tracking
https://github.com/gofiber/fiber/security/advisories/GHSA-m3c2-496v-cw3v	Exploit Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:gofiber:fiber:*:*:*:*:*:go:*:*

History

27 Feb 2026, 03:18

Type	Values Removed	Values Added
References	~~() https://github.com/gofiber/fiber/commit/59133702301c2ab7b776dd123b474cbd995f2c86 -~~	() https://github.com/gofiber/fiber/commit/59133702301c2ab7b776dd123b474cbd995f2c86 - Patch
References	~~() https://github.com/gofiber/fiber/pull/4064 -~~	() https://github.com/gofiber/fiber/pull/4064 - Exploit, Issue Tracking
References	~~() https://github.com/gofiber/fiber/security/advisories/GHSA-m3c2-496v-cw3v -~~	() https://github.com/gofiber/fiber/security/advisories/GHSA-m3c2-496v-cw3v - Exploit, Vendor Advisory
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 7.5
First Time		Gofiber Gofiber fiber
CPE		cpe:2.3:a:gofiber:fiber::::::go::*

24 Feb 2026, 22:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-02-24 22:16

Updated : 2026-02-27 03:18

NVD link : CVE-2026-25891

Mitre link : CVE-2026-25891

CVE.ORG link : CVE-2026-25891

JSON object : View

Products Affected

gofiber

fiber

CWE

CWE-22

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

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