Vulnerability record · CVE-2023-53921 · published 17 December 2025

CVE-2023-53921: Sitemagic cms unrestricted file upload vulnerability

Sitemagic · Sitemagic Cms

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.

8.7 CVSS 4.0 High EPSS 0.96% · top 40.1% CWE-434 · Unrestricted file upload

8.7CVSS 4.0 base score

0.96%EPSS exploitation probability, 30 days

NoNot in CISA KEV

1Affected product versions listed by NVD

4References, 2 tagged exploit

17 Jun 2026Last modified by NVD

Description

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

Sitemagic Cms Sitemagic

References

Link	Tags
https://sitemagic.org/Download.html	Product
https://www.exploit-db.com/exploits/51464	ExploitThird Party Advisory
https://www.vulncheck.com/advisories/sitemagiccms-remote-code-execution-via-unrestricted-file-upload	Third Party Advisory
https://www.exploit-db.com/exploits/51464	ExploitThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2023-53921), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.