CVE-2026-25891

HIGH

7.5

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.

CVE Details

CVSS v3.1 Score7.5

SeverityHIGH

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published2/24/2026

Last Modified2/27/2026

Sourcenvd

Honeypot Sightings0

Affected Products

gofiber:fiber

Weaknesses (CWE)

CWE-22

References

https://github.com/gofiber/fiber/commit/59133702301c2ab7b776dd123b474cbd995f2c86(security-advisories@github.com)

https://github.com/gofiber/fiber/pull/4064(security-advisories@github.com)

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

IOC Correlations

No correlations recorded

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