CVE-2026-27120

MEDIUM

6.1

Descricao

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.

Detalhes CVE

Pontuacao CVSS v3.16.1

SeveridadeMEDIUM

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

Vetor de ataqueNETWORK

ComplexidadeLOW

Privilegios necessariosNONE

Interacao do usuarioREQUIRED

Publicado2/20/2026

Ultima modificacao3/2/2026

Fontenvd

Avistamentos honeypot0

Produtos afetados

vapor:leafkit

Fraquezas (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)

Correlacoes IOC

Sem correlacoes registradas

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