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Vulnerability record · CVE-2023-53924 · published 17 December 2025

CVE-2023-53924: Ulicms unrestricted file upload vulnerability

UUlicms · Ulicms

UliCMS 2023.1-sniffing-vicuna contains a remote code execution vulnerability that allows authenticated attackers to upload PHP files with .phar extension during profile avatar upload. Attackers can trigger code execution by visiting the uploaded file's location, enabling system command execution through maliciously crafted avatar uploads.

8.7 CVSS 4.0 High EPSS 0.94% · top 40.5% CWE-434 · Unrestricted file upload
8.7CVSS 4.0 base score
0.94%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

UliCMS 2023.1-sniffing-vicuna contains a remote code execution vulnerability that allows authenticated attackers to upload PHP files with .phar extension during profile avatar upload. Attackers can trigger code execution by visiting the uploaded file's location, enabling system command execution through maliciously crafted avatar uploads.

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.

References

LinkTags
https://web.archive.org/web/20230314183734/https://en.ulicms.de/ Product
https://www.exploit-db.com/exploits/51434 Exploit
https://www.vulncheck.com/advisories/ulicms-sniffing-vicuna-remote-code-execution-via-avatar-upload Third Party Advisory
https://www.exploit-db.com/exploits/51434 Exploit

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Related vulnerabilities

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

9.3CVE-2023-53923Ulicms missing authorization vulnerabilityUliCMS 2023.1 contains a privilege escalation vulnerability that allows unauthenticated attackers to create administrative accounts through the UserC…EPSS 0.55%9.3CVE-2023-53914Ulicms insecure direct object reference vulnerabilityUliCMS 2023.1 contains an authentication bypass vulnerability that allows unauthenticated attackers to create admin users through mass assignment in …EPSS 0.69%6.1CVE-2020-12703Ulicms cross-site scripting vulnerabilityUliCMS before 2020.2 has XSS during PackageController uninstall.EPSS 0.64%6.1CVE-2020-12704Ulicms cross-site scripting vulnerabilityUliCMS before 2020.2 has PageController stored XSS.EPSS 1.2%6.1CVE-2019-11398Ulicms cross-site scripting vulnerabilityMultiple cross-site scripting (XSS) vulnerabilities in UliCMS 2019.2 and 2019.1 allow remote attackers to inject arbitrary web script or HTML via the…EPSS 3.5%5.1CVE-2023-53925Ulicms cross-site scripting vulnerabilityUliCMS 2023.1 contains a stored cross-site scripting vulnerability that allows attackers to upload malicious SVG files with embedded JavaScript. Atta…EPSS 0.37%10.0CVE-2026-56291Balbooa Forms Joomla extension unauthenticated arbitrary file upload RCEThe Balbooa Forms extension for Joomla before version 2.4.1 accepts file uploads without authentication and does not restrict file type, allowing exe…KEVEPSS 15%analysed10.0CVE-2026-48939iCagenda Joomla extension unrestricted file upload leads to PHP RCEThe iCagenda extension for Joomla fails to restrict file types in its file attachment feature, allowing arbitrary file uploads that result in PHP cod…KEVEPSS 20%analysed

Source: NIST National Vulnerability Database (record CVE-2023-53924), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.