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Vulnerability record · CVE-2023-53923 · published 17 December 2025

CVE-2023-53923: Ulicms missing authorization vulnerability

UUlicms · Ulicms

UliCMS 2023.1 contains a privilege escalation vulnerability that allows unauthenticated attackers to create administrative accounts through the UserController endpoint. Attackers can send a crafted POST request to /dist/admin/index.php with specific parameters to generate a new admin user with full system access.

9.3 CVSS 4.0 Critical EPSS 0.55% · top 56.0% CWE-862 · Missing authorization
9.3CVSS 4.0 base score
0.55%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 contains a privilege escalation vulnerability that allows unauthenticated attackers to create administrative accounts through the UserController endpoint. Attackers can send a crafted POST request to /dist/admin/index.php with specific parameters to generate a new admin user with full system access.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/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/51433 Exploit
https://www.vulncheck.com/advisories/ulicms-privilege-escalation-via-unauthenticated-admin-account-creation Third Party Advisory
https://www.exploit-db.com/exploits/51433 Exploit

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Related vulnerabilities

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

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%8.7CVE-2023-53924Ulicms unrestricted file upload vulnerabilityUliCMS 2023.1-sniffing-vicuna contains a remote code execution vulnerability that allows authenticated attackers to upload PHP files with .phar exten…EPSS 0.94%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%9.9CVE-2026-84869ScreenConnect client allows unauthorized file transfer and execution in remote sessionsA flaw in the ConnectWise ScreenConnect client lets files be transferred and executed inside an active remote session without authorization or Host c…KEVEPSS 0.92%analysed7.8CVE-2022-0492Linux kernel cgroups v1 release_agent privilege escalation and container escapeThe Linux kernel's cgroup_release_agent_write in kernel/cgroup/cgroup-v1.c mishandles authorization, letting the cgroups v1 release_agent feature be …KEVEPSS 5.5%analysed

Source: NIST National Vulnerability Database (record CVE-2023-53923), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.