CVE-2023-44763

MEDIUM

Concretecms Concrete Cms - Unrestricted File Upload

Title source: rule

Description

Concrete CMS v9.2.1 is affected by an Arbitrary File Upload vulnerability via a Thumbnail file upload, which allows Cross-Site Scripting (XSS). NOTE: the vendor's position is that a customer is supposed to know that "pdf" should be excluded from the allowed file types, even though pdf is one of the allowed file types in the default configuration.

Exploits (1)

nomisec WRITEUP

by sromanhu · poc

https://github.com/sromanhu/CVE-2023-44763_ConcreteCMS-Arbitrary-file-upload-Thumbnail

View Code ZIP pw:eip

References (3)

[Various Sources] https://web.archive.org/web/20231026034159/https://documentation.concretecms.org/user-guide/editors-reference/dashboard/system-and-maintenance/files/allowed-file-types

[Various Sources] https://www.concretecms.org/about/project-news/security/security-advisory-2023-10-25-concrete-cms-rejects-cve-2023-44763

[Exploit, Third Party Advisory] https://github.com/sromanhu/ConcreteCMS-Arbitrary-file-upload-Thumbnail

Scores

CVSS v3 5.4

EPSS 0.0027

EPSS Percentile 50.4%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Details

CWE

CWE-434

Status published

Products (2)

concrete5/concrete5 0Packagist

concretecms/concrete_cms 9.2.1

Published Oct 10, 2023

Tracked Since Feb 18, 2026