CVE-2023-53914: UliCMS 2023.1 contains an authentication bypass vulnerability that allows unauthenticated attackers to create

This week

CRITICAL 9.8REMOTEDOWNGRADE

CVE-2023-53914 is a critical-severity flaw (CVSS 9.8) affecting ulicms. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

UliCMS 2023.1 contains an authentication bypass vulnerability that allows unauthenticated attackers to create admin users through mass assignment in the UserController. Attackers can send a crafted POST request to the admin index.php endpoint with specific parameters to generate an administrative account with full system access.

Why this priority

Critical severity
Public exploit reference
CISA SSVC: automatable with total technical impact
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.7% (top 47%)
CISA exploited list	No
Weakness	CWE-639
Published	2025-12-17
Last modified	2026-06-17

Publisher (CNA): VulnCheck · Vendor: ulicms

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-12-17 23:15 UTCPublished CVE record published
2026-06-17 06:46 UTCUpdated Record last modified

ulicms ulicms DOWNGRADE

Affected: 2023.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 2023.1

1. Check installed version

apt-cache policy ulicms || rpm -q ulicms || ulicms --version

2. No fixed release: DOWNGRADE to a release before 2023.1 (Debian / Ubuntu)

apt-cache madison ulicms sudo apt install ulicms=<VERSION_BEFORE_2023.1> sudo apt-mark hold ulicms

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list ulicms sudo dnf downgrade ulicms-<VERSION_BEFORE_2023.1> sudo dnf versionlock add ulicms

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Exact fixes by distribution

A distro patch exists: prefer upgrading over downgrading.

Fedora 46 · conan · FIXED · 2.31.0-1.fc46 · FEDORA-2026-ba58084ab5 · source

sudo dnf upgrade --advisory=FEDORA-2026-ba58084ab5

Fedora ELN · tesseract · FIXED · 5.5.4-1.eln159 · FEDORA-2026-866cf60ee6 · source

sudo dnf upgrade --advisory=FEDORA-2026-866cf60ee6

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Write-up: www.exploit-db.com/exploits/51486

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2023-53914?

ulicms: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2023-53914 being exploited?

CVE-2023-53914 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2023-53914 affect?

CVE-2023-53914 affects ulicms. Severity is critical (CVSS 9.8). UliCMS 2023.1 contains an authentication bypass vulnerability that allows unauthenticated attackers to create admin users through mass assignment in the UserController. Attackers can send a crafted POST request to the admin index.php endpoi

How urgent is CVE-2023-53914?

Priority 60/100. Critical severity; Public exploit reference; CISA SSVC: automatable with total technical impact; Remotely exploitable, no login, no user action

Software pages

PHP vulnerabilities

Related CVEs

CVE-2023-53925 MEDIUM 6.1 DOWNGRADE UliCMS 2023.1 contains a stored cross-site scripting vulnerability that allows attackers to upload malicious S
CVE-2023-53924 HIGH 8.8 DOWNGRADE UliCMS 2023.1-sniffing-vicuna contains a remote code execution vulnerability that allows authenticated attacke
CVE-2023-53923 CRITICAL 9.8 DOWNGRADE UliCMS 2023.1 contains a privilege escalation vulnerability that allows unauthenticated attackers to create ad

References

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