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.

Project Subscriptions

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Advisories
Source ID Title
Github GHSA Github GHSA GHSA-mrq8-rjmw-wpq3 Fiber has a Denial of Service Vulnerability via Route Parameter Overflow
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Tue, 24 Feb 2026 22:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 24 Feb 2026 21:30:00 +0000

Type Values Removed Values Added
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 3.0.1 patches the issue in the v3 branch. 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.

Tue, 24 Feb 2026 21:15:00 +0000

Type Values Removed Values Added
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 3.0.1 patches the issue in the v3 branch.
Title Fiber has a Denial of Service Vulnerability via Route Parameter Overflow
Weaknesses CWE-129
References
Metrics cvssV4_0

{'score': 5.5, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-02-24T21:39:51.170Z

Reserved: 2026-02-06T21:08:39.129Z

Link: CVE-2026-25882

cve-icon Vulnrichment

Updated: 2026-02-24T21:39:44.016Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-02-24T21:16:29.640

Modified: 2026-02-24T22:16:31.310

Link: CVE-2026-25882

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses