CVE-2026-25882

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. 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.

7.5 /10

CVSS v3 : HIGH

V3 Legend

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

17 Jun 2026, 10:25

Type Values Removed Values Added
Summary
  • (es) Fiber es un framework web inspirado en Express escrito en Go. Existe una vulnerabilidad de denegación de servicio en Fiber v2 y v3 que permite a atacantes remotos bloquear la aplicación enviando solicitudes a rutas con más de 30 parámetros. La vulnerabilidad resulta de la falta de validación durante el registro de rutas combinada con una escritura de array sin límites durante la coincidencia de solicitudes. La versión 2.52.12 corrige el problema en la rama v2 y la 3.1.0 corrige el problema en la rama v3.

27 Feb 2026, 03:18

Type Values Removed Values Added
First Time Gofiber
Gofiber fiber
CPE cpe:2.3:a:gofiber:fiber:*:*:*:*:*:go:*:*
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 7.5
References () https://github.com/gofiber/fiber/blob/main/path.go#L514 - () https://github.com/gofiber/fiber/blob/main/path.go#L514 - Product
References () https://github.com/gofiber/fiber/blob/v2/path.go#L516 - () https://github.com/gofiber/fiber/blob/v2/path.go#L516 - Product
References () https://github.com/gofiber/fiber/pull/3962 - () https://github.com/gofiber/fiber/pull/3962 - Issue Tracking, Patch
References () https://github.com/gofiber/fiber/security/advisories/GHSA-mrq8-rjmw-wpq3 - () https://github.com/gofiber/fiber/security/advisories/GHSA-mrq8-rjmw-wpq3 - Exploit, Vendor Advisory

24 Feb 2026, 22:16

Type Values Removed Values Added
Summary (en) 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. (en) 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.

24 Feb 2026, 21:16

Type Values Removed Values Added
New CVE
Information

Published : 2026-02-24 21:16

Updated : 2026-06-17 10:25

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