CVE-2026-25882

7.5 HIGH
Published: February 24, 2026 Modified: February 27, 2026
View on NVD

Description

Fiber is an Express inspired web framework written in Go. A denial of service vulnerability exists in Fiber v2 and v3 that allows remote attackers to crash the application by sending requests to routes with more than 30 parameters. The vulnerability results from missing validation during route registration combined with an unbounded array write during request matching. Version 2.52.12 patches the issue in the v2 branch and 3.1.0 patches the issue in the v3 branch.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://github.com/gofiber/fiber/blob/main/path.go#L514
Source: security-advisories@github.com
Product
https://github.com/gofiber/fiber/blob/v2/path.go#L516
Source: security-advisories@github.com
Product
https://github.com/gofiber/fiber/pull/3962
Source: security-advisories@github.com
Issue Tracking Patch
https://github.com/gofiber/fiber/security/advisories/GHSA-mrq8-rjmw-wpq3
Source: security-advisories@github.com
Exploit Vendor Advisory

4 reference(s) from NVD

Quick Stats

CVSS v3 Score
7.5 / 10.0
EPSS (Exploit Probability)
0.1%
15th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

Affected Vendors

gofiber