Which versions of PHP are affected by CVE-2026-3406?

A high-severity vulnerability in the Online Art Gallery Shop registration system could allow unauthorized administrative access or account manipulation, directly threatening user data integrity and…

Is there a public PoC exploit available for CVE-2026-3406?

Yes, a public proof-of-concept exploit is available for CVE-2026-3406. Prioritise patching immediately. EPSS: 0.0%.

How to fix or mitigate CVE-2026-3406?

Within 24 hours: Disable or restrict access to /admin/registration.php via network firewall or WAF rules; audit administrative account logs for suspicious activity. Within 7 days: Implement Web Application Firewall (WAF) rules to block exploitation attempts; conduct thorough review of all admin accounts and reset credentials; consider taking the registration module offline if business operations permit. Within 30 days: Contact vendor for patch timeline and interim security updates; evaluate alternative gallery solutions if patch is not forthcoming; implement enhanced logging and monitoring on administrative interfaces.

PHP CVE-2026-3406

Q: What is the CVSS score of CVE-2026-3406?

CVE-2026-3406 has a CVSS 4.0 base score of 5.5 (Medium). CVSS vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/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:X/V:X/RE:X/U:X. EPSS exploitation probability: 0.0%.

MEDIUM

Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') (CWE-74)

2026-03-02 cna@vuldb.com

PHP SQLi

5.5

CVSS 4.0 · NVD

Severity by source

NVD PRIMARY

5.5 MEDIUM

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/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:X/V:X/RE:X/U:X

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/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:X/V:X/RE:X/U:X

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Lifecycle Timeline

Severity Changed

Apr 29, 2026 - 01:11 NVD

HIGH MEDIUM

CVSS changed

Apr 29, 2026 - 01:11 NVD

7.3 (HIGH) 5.5 (MEDIUM)

Analysis Generated

Mar 12, 2026 - 21:55 vuln.today

PoC Detected

Mar 03, 2026 - 19:46 vuln.today

Public exploit code

CVE Published

Mar 02, 2026 - 03:16 nvd

HIGH 7.3

DescriptionCVE.org

A vulnerability was found in projectworlds Online Art Gallery Shop 1.0. The impacted element is an unknown function of the file /admin/registration.php of the component Registration Handler. The manipulation of the argument fname results in sql injection. It is possible to launch the attack remotely. The exploit has been made public and could be used.

AnalysisAI

SQL injection in Online Art Gallery Shop 1.0 via the fname parameter in /admin/registration.php enables unauthenticated remote attackers to manipulate database queries. Public exploit code exists for this vulnerability, and no patch is currently available, leaving affected PHP installations at immediate risk of data compromise or unauthorized access.

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Risk assessment & exploitation conditions
Attack chain visualization
Remediation with exact patch versions
Threat intelligence from 22 sources
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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access

Send crafted HTTP request to /admin/registration.php

Exploit

Inject SQL payload in fname parameter

Execution

Execute arbitrary SQL queries

Impact

Extract or modify database contents

Access

Send crafted HTTP request to /admin/registration.php

Exploit

Inject SQL payload in fname parameter

Execution

Execute arbitrary SQL queries

Impact

Extract or modify database contents

Vulnerability AssessmentAI

Exploitation	No special conditions — remote unauthenticated exploitation against default installations of projectworlds Online Art Gallery Shop 1.0 with accessible /admin/registration.php endpoint accepting fname parameter without input validation. Additional conditions and limiting factors are described in the full assessment.
Risk Assessment	CVSS 7.3 (HIGH). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario	A remote attacker (requires authentication) could exploit this flaw, sql injection.
Remediation	Monitor vendor advisories for a patch. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 24 hours: Disable or restrict access to /admin/registration.php via network firewall or WAF rules; audit administrative account logs for suspicious activity. …

Threat intelligence, references, and detailed analysis are available after sign-in.

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CVE-2026-3406 vulnerability details – vuln.today

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PHP CVE-2026-3406

Severity by source

CVSS VectorNVD

Lifecycle Timeline

DescriptionCVE.org

AnalysisAI

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Attack ChainAIDerived

Vulnerability AssessmentAI

Recommended ActionAI

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External POC / Exploit Code