CVE-2026-4257 — Katalog CVE

csirt@kutim:~/threat-intel/cve/CVE-2026-4257

CVSS 9.8 · Critical EPSS 32,8%

Kerentanan Improper Control of Generation of Code ('Code Injection'). Skor CVSS 3.1 9.8 (Critical) menurut wordfence.com.

Deskripsi (NVD)

The Contact Form by Supsystic plugin for WordPress is vulnerable to Server-Side Template Injection (SSTI) leading to Remote Code Execution (RCE) in all versions up to, and including, 1.7.36. This is due to the plugin using the Twig `Twig_Loader_String` template engine without sandboxing, combined with the `cfsPreFill` prefill functionality that allows unauthenticated users to inject arbitrary Twig expressions into form field values via GET parameters. This makes it possible for unauthenticated attackers to execute arbitrary PHP functions and OS commands on the server by leveraging Twig's `registerUndefinedFilterCallback()` method to register arbitrary PHP callbacks.

Rincian

Terbit di NVD: 30 Maret 2026
Terakhir diubah: 17 Juni 2026
Status NVD: Deferred
CVSS 3.1: 9.8 (Critical), sumber wordfence.com
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H · uraikan di kalkulator
Jenis kelemahan (CWE): CWE-94: Improper Control of Generation of Code ('Code Injection')
EPSS (30 hari): 32,8% peluang dieksploitasi; lebih tinggi dari 98,3% CVE lain

Produk dan versi terdampak

NVD belum mencantumkan data produk (CPE) untuk CVE ini. Produk yang terdampak biasanya disebut di deskripsi dan di advisory vendor pada daftar referensi.

Referensi dan perbaikan

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.