CVE-2021-38346

Katalog CVE

CVSS 8.8 · High EPSS 1,7%

Kerentanan Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') pada brizy-page builder. Skor CVSS 3.1 8.8 (High) menurut wordfence.com.

Deskripsi (NVD)

The Brizy Page Builder plugin <= 2.3.11 for WordPress allowed authenticated users to upload executable files to a location of their choice using the brizy_create_block_screenshot AJAX action. The file would be named using the id parameter, which could be prepended with "../" to perform directory traversal, and the file contents were populated via the ibsf parameter, which would be base64-decoded and written to the file. While the plugin added a .jpg extension to all uploaded filenames, a double extension attack was still possible, e.g. a file named shell.php would be saved as shell.php.jpg, and would be executable on a number of common configurations.

Rincian

Terbit di NVD

14 Oktober 2021

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

8.8 (High), sumber wordfence.com
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CWE-434: Unrestricted Upload of File with Dangerous Type

EPSS (30 hari)

1,7% peluang dieksploitasi; lebih tinggi dari 77,1% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://www.wordfence.com/blog/2021/10/multiple-vulnerabilities-in-brizy-page-builder-plugin-allow-site-takeov... advisory pihak ketiga