CVE-2026-18117

Katalog CVE

CVSS 5.4 · Medium EPSS 0,14%

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

Deskripsi (NVD)

Concrete CMS 9.0.0 through 9.5.3 is vulnerable to stored XSS via the custom page alias name (customAliasName) because the Edit Alias dialog applied only trim() to the submitted value and performed no input neutralization. An authenticated user holding canWrite (editor) permission on a page could store a malicious alias name that was later rendered unescaped in the administrative Sitemap panel, where it executed automatically in any administrator or editor session that opened the panel, allowing an editor to escalate to administrator through the victim's active session. The Concrete CMS security team gave this vulnerability a CVSS v4.0 score of 7.3 with vector CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:P/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N. Thanks Nguyen Manh Thuan for reporting.

Rincian

Terbit di NVD

14 September 2026

Terakhir diubah

29 September 2026

Status NVD

Analyzed

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)

0,14% peluang dieksploitasi; lebih tinggi dari 3,1% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://documentation.concretecms.org/developers/introduction/version-history/953-release-notes broken link