CVE-2026-25899

HIGH

7.5

Description

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.

Details CVE

Score CVSS v3.17.5

SeveriteHIGH

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

Vecteur d'attaqueNETWORK

ComplexiteLOW

Privileges requisNONE

Interaction utilisateurNONE

Publie2/24/2026

Derniere modification2/25/2026

Sourcenvd

Observations honeypot0

Produits affectes

gofiber:fiber

Faiblesses (CWE)

CWE-789CWE-770

References

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)

Correlations IOC

Aucune correlation enregistree

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