CVE-2026-25891

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.

PUBLISHED Reserved 2026-02-06 | Published 2026-02-24 | Updated 2026-02-24 | Assigner GitHub_M

Problem types

CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Product status

References

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

github.com/gofiber/fiber/pull/4064

github.com/...ommit/59133702301c2ab7b776dd123b474cbd995f2c86

cve.org (CVE-2026-25891)

nvd.nist.gov (CVE-2026-25891)

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