CVE-2026-25891

Published: Feb 24, 2026Modified: Jun 17, 2026

7.7

Vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Show more

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:XShow less

Source: security-advisories@github.com (Secondary)

Description

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.

Affected (1)

Products: Gofiber: Fiber

1 product

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Gofiber Fiber	From 3.0.0 to 3.1.0

Related CWEs

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

The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.

References (3)

https://github.com/gofiber/fiber/commit/59133702301c2ab7b776dd123b474cbd995f2c86

Source: security-advisories@github.com

Patch

https://github.com/gofiber/fiber/pull/4064

Source: security-advisories@github.com

ExploitIssue Tracking

https://github.com/gofiber/fiber/security/advisories/GHSA-m3c2-496v-cw3v

Source: security-advisories@github.com

ExploitVendor Advisory

Timeline

No history available yet.