CVE-2021-43808: laravel framework

csirt@kutim:~/threat-intel/cve/CVE-2021-43808

CVSS 6.1 · Medium EPSS 0,83%

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

Deskripsi (NVD)

Laravel is a web application framework. Laravel prior to versions 8.75.0, 7.30.6, and 6.20.42 contain a possible cross-site scripting (XSS) vulnerability in the Blade templating engine. A broken HTML element may be clicked and the user taken to another location in their browser due to XSS. This is due to the user being able to guess the parent placeholder SHA-1 hash by trying common names of sections. If the parent template contains an exploitable HTML structure an XSS vulnerability can be exposed. This vulnerability has been patched in versions 8.75.0, 7.30.6, and 6.20.42 by determining the parent placeholder at runtime and using a random hash that is unique to each request.

Rincian

Terbit di NVD: 8 Desember 2021
Terakhir diubah: 17 Juni 2026
Status NVD: Modified
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-327: Use of a Broken or Risky Cryptographic Algorithm
EPSS (30 hari): 0,83% peluang dieksploitasi; lebih tinggi dari 56,2% CVE lain

Produk dan versi terdampak

Vendor	Produk	Versi terdampak
laravel	framework	Semua versi sebelum 6.20.42
laravel	framework	Versi 7.0.0 hingga sebelum 7.30.6
laravel	framework	Versi 8.0.0 hingga sebelum 8.75.0

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

https://github.com/laravel/framework/commit/b8174169b1807f36de1837751599e2828ceddb9b patch · advisory pihak ketiga
https://github.com/laravel/framework/pull/39906 patch · advisory pihak ketiga
https://github.com/laravel/framework/pull/39908 patch · advisory pihak ketiga
https://github.com/laravel/framework/pull/39909 patch · advisory pihak ketiga
https://github.com/laravel/framework/releases/tag/v6.20.42 release notes · advisory pihak ketiga
https://github.com/laravel/framework/releases/tag/v7.30.6 release notes · advisory pihak ketiga
https://github.com/laravel/framework/releases/tag/v8.75.0 release notes · advisory pihak ketiga
https://github.com/laravel/framework/security/advisories/GHSA-66hf-2p6w-jqfw exploit · advisory pihak ketiga

Sumber: NVD · CVE.org · EPSS. Halaman ini disusun otomatis dari data tersebut; pembaruan terakhir 5 Okt 2026, 20:10 WITA. Kalau sistem di Perangkat Daerah memakai produk ini dan butuh bantuan, laporkan lewat kanal pelaporan.