CVE-2026-28499: vapor leafkit

csirt@kutim:~/threat-intel/cve/CVE-2026-28499

CVSS 6.1 · Medium EPSS 0,34%

Kerentanan Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') pada vapor leafkit. Skor CVSS 3.1 6.1 (Medium) menurut NVD.

Deskripsi (NVD)

LeafKit is a templating language with Swift-inspired syntax. Prior to version 1.14.2, HTML escaping doesn't work correctly when a template prints a collection (Array / Dictionary) via `#(value)`. This can result in XSS, allowing potentially untrusted input to be rendered unescaped. Version 1.14.2 fixes the issue.

Rincian

Terbit di NVD: 18 Maret 2026
Terakhir diubah: 17 Juni 2026
Status NVD: Analyzed
CVSS 3.1: 6.1 (Medium), sumber NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N · uraikan di kalkulator
Jenis kelemahan (CWE): CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE-80: Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)
CWE-116: Improper Encoding or Escaping of Output
EPSS (30 hari): 0,34% peluang dieksploitasi; lebih tinggi dari 25,0% CVE lain

Produk dan versi terdampak

Vendor	Produk	Versi terdampak
vapor	leafkit	Semua versi sebelum 1.14.2

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

https://github.com/vapor/leaf-kit/security/advisories/GHSA-6jj5-j4j8-8473 exploit · advisory vendor
https://github.com/vapor/leaf-kit/commit/6044b844caa858a0c5f2505ac166f5a057c990dc patch
https://github.com/vapor/leaf-kit/releases/tag/1.14.2 release notes

Sumber: NVD · CVE.org · EPSS. Halaman ini disusun otomatis dari data tersebut; pembaruan terakhir 5 Okt 2026, 20:11 WITA. Kalau sistem di Perangkat Daerah memakai produk ini dan butuh bantuan, laporkan lewat kanal pelaporan.