CVE-2026-25899

HIGH

7.5

Descripcion

Fiber is an Express inspired web framework written in Go. In versions on the v3 branch prior to 3.1.0, the use of the `fiber_flash` cookie can force an unbounded allocation on any server. A crafted 10-character cookie value triggers an attempt to allocate up to 85GB of memory via unvalidated msgpack deserialization. No authentication is required. Every GoFiber v3 endpoint is affected regardless of whether the application uses flash messages. Version 3.1.0 fixes the issue.

Detalles CVE

Puntuacion CVSS v3.17.5

SeveridadHIGH

Vector CVSSCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Vector de ataqueNETWORK

ComplejidadLOW

Privilegios requeridosNONE

Interaccion usuarioNONE

Publicado2/24/2026

Ultima modificacion2/25/2026

Fuentenvd

Avistamientos honeypot0

Productos afectados

gofiber:fiber

Debilidades (CWE)

CWE-789CWE-770

Referencias

https://github.com/gofiber/fiber/releases/tag/v3.1.0(security-advisories@github.com)

https://github.com/gofiber/fiber/security/advisories/GHSA-2mr3-m5q5-wgp6(security-advisories@github.com)

Correlaciones IOC

Sin correlaciones registradas

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