CVE-2026-27120

MEDIUM

6.1

Beschreibung

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.

CVE Details

CVSS v3.1 Bewertung6.1

SchweregradMEDIUM

CVSS VektorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

AngriffsvektorNETWORK

KomplexitatLOW

Erforderliche PrivilegienNONE

BenutzerinteraktionREQUIRED

Veroffentlicht2/20/2026

Zuletzt geandert3/2/2026

Quellenvd

Honeypot-Sichtungen0

Betroffene Produkte

vapor:leafkit

Schwachen (CWE)

CWE-75CWE-79CWE-87

Referenzen

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)

IOC Korrelationen

Keine Korrelationen erfasst

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