csirt@kutim:~/threat-intel/cve/CVE-2021-43856

Katalog CVE

CVSS 5.4 · Medium EPSS 0,89%

Kerentanan Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') pada requarks wiki.js. Skor CVSS 3.1 5.4 (Medium) menurut NVD.

Deskripsi (NVD)

Wiki.js is a wiki app built on Node.js. Wiki.js 2.5.263 and earlier is vulnerable to stored cross-site scripting through non-image file uploads for file types that can be viewed directly inline in the browser. By creating a malicious file which can execute inline JS when viewed in the browser (e.g. XML files), a malicious Wiki.js user may stage a stored cross-site scripting attack. This allows the attacker to execute malicious JavaScript when the file is viewed directly by other users. The file must be opened directly by the user and will not trigger directly in a normal Wiki.js page. A patch in version 2.5.264 fixes this vulnerability by adding an optional (enabled by default) force download flag to all non-image file types, preventing the file from being viewed inline in the browser. As a workaround, disable file upload for all non-trusted users. --- Thanks to @Haxatron for reporting this vulnerability. Initially reported via https://huntr.dev/bounties/266bff09-00d9-43ca-a4bb-bb540642811f/

Rincian

Terbit di NVD
27 Desember 2021
Terakhir diubah
17 Juni 2026
Status NVD
Modified
CVSS 3.1
5.4 (Medium), sumber NVD
CVSS:3.1/AV:N/AC:L/PR:L/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')
EPSS (30 hari)
0,89% peluang dieksploitasi; lebih tinggi dari 58,2% CVE lain

Produk dan versi terdampak

VendorProdukVersi terdampak
requarks wiki.js Semua versi sebelum 2.5.264

> 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, 20:10 WITA. Kalau sistem di Perangkat Daerah memakai produk ini dan butuh bantuan, laporkan lewat kanal pelaporan.