CVE-2026-81900

Katalog CVE

CVSS 6.1 · Medium EPSS 0,26%

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

Deskripsi (NVD)

Concrete CMS before 9.5.3 applied only trim() to the YouTube block's stored width and height values and printed them into iframe HTML attributes without escaping or integer casting, resulting in stored cross-site scripting. A user with edit_block permission could inject an event handler that executed script for visitors rendering the page, acting with administrative privileges where the victim was an administrator. 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:H/SC:N/SI:N/SA:N. Thanks sh4d0byss for reporting.

Rincian

Terbit di NVD

14 September 2026

Terakhir diubah

16 September 2026

Status NVD

Analyzed

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')

EPSS (30 hari)

0,26% peluang dieksploitasi; lebih tinggi dari 15,9% 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