CVE-2026-27120

MEDIUM

6.1

Descripcion

Leafkit is a templating language with Swift-inspired syntax. Prior to 1.4.1, htmlEscaped in leaf-kit will only escape html special characters if the extended grapheme clusters match, which allows bypassing escaping by using an extended grapheme cluster containing both the special html character and some additional characters. In the case of html attributes, this can lead to XSS if there is a leaf variable in the attribute that is user controlled. This vulnerability is fixed in 1.4.1.

Detalles CVE

Puntuacion CVSS v3.16.1

SeveridadMEDIUM

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

Vector de ataqueNETWORK

ComplejidadLOW

Privilegios requeridosNONE

Interaccion usuarioREQUIRED

Publicado2/20/2026

Ultima modificacion3/2/2026

Fuentenvd

Avistamientos honeypot0

Productos afectados

vapor:leafkit

Debilidades (CWE)

CWE-75CWE-79CWE-87

Referencias

https://github.com/vapor/leaf-kit/commit/8919e39476c3a4ba05c28b71546bb9195f87ef34(security-advisories@github.com)

https://github.com/vapor/leaf-kit/security/advisories/GHSA-4hfh-fch3-5q7p(security-advisories@github.com)

Correlaciones IOC

Sin correlaciones registradas

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