CVE-2026-4926

HIGH

7.5

Descripcion

Impact: A bad regular expression is generated any time you have multiple sequential optional groups (curly brace syntax), such as `{a}{b}{c}:z`. The generated regex grows exponentially with the number of groups, causing denial of service. Patches: Fixed in version 8.4.0. Workarounds: Limit the number of sequential optional groups in route patterns. Avoid passing user-controlled input as route patterns.

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

Publicado3/26/2026

Ultima modificacion3/30/2026

Fuentenvd

Avistamientos honeypot0

Debilidades (CWE)

CWE-400CWE-1333

Referencias

https://cna.openjsf.org/security-advisories.html(ce714d77-add3-4f53-aff5-83d477b104bb)

Correlaciones IOC

Sin correlaciones registradas

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