csirt@kutim:~/threat-intel/cve/CVE-2026-18426

Katalog CVE

CVSS 6.5 · Medium EPSS 0,21%

Kerentanan Missing Authorization pada concretecms concrete cms. Skor CVSS 3.1 6.5 (Medium) menurut NVD.

Deskripsi (NVD)

Concrete CMS 9.0.0 through 9.5.2 did not enforce a block-level edit-permission check on the Express Form block's control-management actions, which relied solely on CSRF token validation. Because the token is bound to the user and action rather than to a specific block, page, or form, an authenticated user with edit access to one Express Form could reuse a validly obtained token to add, modify, or delete controls on Express Forms they were not authorized to edit, including injecting a control whose value is later rendered as HTML to achieve stored XSS. The Concrete CMS security team gave this vulnerability a CVSS v4.0 score of 2.0 with vector CVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N. Thanks Yat Wu for reporting.

Rincian

Terbit di NVD
15 September 2026
Terakhir diubah
21 September 2026
Status NVD
Analyzed
CVSS 3.1
6.5 (Medium), sumber NVD
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N · uraikan di kalkulator
Jenis kelemahan (CWE)
CWE-862: Missing Authorization
EPSS (30 hari)
0,21% peluang dieksploitasi; lebih tinggi dari 9,8% CVE lain

Produk dan versi terdampak

VendorProdukVersi terdampak
concretecms concrete cms Versi 9.0.0 hingga sebelum 9.5.3

> 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.