gofiber up to 2.52.11/3.0.x Registration array index

Summaryinfo

A vulnerability, which was classified as problematic, was found in gofiber fiber up to 2.52.11/3.0.x. This impacts an unknown function of the component Registration Handler. The manipulation results in array index. This vulnerability is cataloged as CVE-2026-25882. The attack may be launched remotely. There is no exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, was found in gofiber fiber up to 2.52.11/3.0.x. Affected is some unknown functionality of the component Registration Handler. The manipulation with an unknown input leads to a array index vulnerability. CWE is classifying the issue as CWE-129. The product uses untrusted input when calculating or using an array index, but the product does not validate or incorrectly validates the index to ensure the index references a valid position within the array. This is going to have an impact on availability. CVE summarizes:

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.

The advisory is shared for download at github.com. This vulnerability is traded as CVE-2026-25882 since 02/06/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are neither technical details nor an exploit publicly available.

Upgrading to version 2.52.12 or 3.1.0 eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

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Productinfo

Vendor

• gofiber

Name

• fiber

Version

• 2.52.0
• 2.52.1
• 2.52.2
• 2.52.3
• 2.52.4
• 2.52.5
• 2.52.6
• 2.52.7
• 2.52.8
• 2.52.9
• 2.52.10
• 2.52.11
• 3.0

Website

• Product: https://github.com/gofiber/fiber/

CPE 2.3info

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CPE 2.2info

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