CVE-2026-40478: thymeleaf

csirt@kutim:~/threat-intel/cve/CVE-2026-40478

CVSS 9.0 · Critical EPSS 1,2%

Kerentanan Improper Neutralization of Special Elements used in an Expression Language Statement ('Expression Language Injection') pada thymeleaf. Skor CVSS 3.1 9.0 (Critical) menurut github.com.

Deskripsi (NVD)

Thymeleaf is a server-side Java template engine for web and standalone environments. Versions 3.1.3.RELEASE and prior contain a security bypass vulnerability in the the expression execution mechanisms. Although the library provides mechanisms to prevent expression injection, it fails to properly neutralize specific syntax patterns that allow for the execution of unauthorized expressions. If an application developer passes unvalidated user input directly to the template engine, an unauthenticated remote attacker can bypass the library's protections to achieve Server-Side Template Injection (SSTI). This issue has ben fixed in version 3.1.4.RELEASE.

Rincian

Terbit di NVD: 17 April 2026
Terakhir diubah: 18 Agustus 2026
Status NVD: Modified
CVSS 3.1: 9.0 (Critical), sumber github.com
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H · uraikan di kalkulator
Jenis kelemahan (CWE): CWE-917: Improper Neutralization of Special Elements used in an Expression Language Statement ('Expression Language Injection')
CWE-1336: Improper Neutralization of Special Elements Used in a Template Engine
EPSS (30 hari): 1,2% peluang dieksploitasi; lebih tinggi dari 67,4% CVE lain

Produk dan versi terdampak

Vendor	Produk	Versi terdampak
thymeleaf	thymeleaf	Semua versi sebelum 3.1.4

> Data dari konfigurasi CPE di NVD.

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.