CVE-2026-25882

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.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

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

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:gofiber:fiber::::::go::*
	cpe:2.3:a:gofiber:fiber::::::go::*

History

No history.

Information

Published : 2026-02-24 21:16

Updated : 2026-02-27 03:18

NVD link : CVE-2026-25882

Mitre link : CVE-2026-25882

CVE.ORG link : CVE-2026-25882

JSON object : View

Products Affected

gofiber

fiber

CWE

CWE-129

Improper Validation of Array Index

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