CVE-2023-53921 | SitemagicCMS 4.4.3 contains a remote code execution vulnerab… | CVSS 9.8 CRITICAL

Description

SitemagicCMS 4.4.3 contains a remote code execution vulnerability that allows attackers to upload malicious PHP files to the files/images directory. Attackers can upload a .phar file with system command execution payload to compromise the web application and execute arbitrary system commands.

Metadata

CVE ID: CVE-2023-53921
State: PUBLISHED
Assigner: VulnCheck
Reserved: 2025-12-16 19:22 UTC
Published: 2025-12-17 22:44 UTC
Last updated: 2026-04-07 14:07 UTC
Primary CWE: CWE-434
Unrestricted Upload of File with Dangerous Type
Vendor / Product: Sitemagic / SitemagicCMS
Sources: cve.org · NVD

Severity & Metrics

9.8 CRITICAL CVSS 3.1

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

SSVC — CISA Coordinator

Exploitation: PoC
Automatable: no
Tech. Impact: total

Affected products (1)

Vendor	Product	Platform	Versions
Sitemagic	SitemagicCMS	—	4.4.3

Weakness (CWE)

CWE	Source	Description
CWE-434	cna	Unrestricted Upload of File with Dangerous Type

CVSS scores (2)

Score	Severity	Version	Source	Vector
9.8	CRITICAL	3.1	cna	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
8.7	HIGH	4.0	cna	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

References (3)

ExploitDB-51464 https://www.exploit-db.com/exploits/51464
Official Product Webpage https://sitemagic.org/Download.html
VulnCheck Advisory: SitemagicCMS 4.4.3 Remote Code Execution via Unrestricted File Upload https://www.vulncheck.com/advisories/sitemagiccms-remote-code-execution-via-unrestricted-file-upload