Which versions of PHP are affected by CVE-2026-0643?

Organizations using A flaw face moderate risk from CVE-2026-0643, a improper access control vulnerability rated CVSS 7.3. Exploitation could compromise the security of affected deployments.

Is there a public PoC exploit available for CVE-2026-0643?

Yes, a public proof-of-concept exploit is available for CVE-2026-0643. Prioritise patching immediately. EPSS: 0.1%.

How to fix or mitigate CVE-2026-0643?

Within 7 days: Identify all affected systems and apply vendor patches promptly. Monitor vendor channels for patch availability.

PHP CVE-2026-0643

Q: What is the CVSS score of CVE-2026-0643?

CVE-2026-0643 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: 0.1%.

MEDIUM

Improper Access Control (CWE-284)

2026-01-07 cna@vuldb.com

PHP Authentication Bypass File Upload

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 - 21:54 vuln.today

PoC Detected

Jan 15, 2026 - 21:26 vuln.today

Public exploit code

CVE Published

Jan 07, 2026 - 12:17 nvd

HIGH 7.3

DescriptionCVE.org

A flaw has been found in projectworlds House Rental and Property Listing 1.0. Impacted is an unknown function of the file /app/register.php?action=reg of the component Signup. This manipulation of the argument image causes unrestricted upload. Remote exploitation of the attack is possible. The exploit has been published and may be used.

AnalysisAI

House Rental And Property Listing Project versions up to 1.0 is affected by improper access control (CVSS 7.3).

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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 POST request to /app/register.php?action=reg

Exploit

Manipulate image parameter with malicious file

Execution

Bypass upload validation

Impact

Execute uploaded file on server

Access

Send POST request to /app/register.php?action=reg

Exploit

Manipulate image parameter with malicious file

Execution

Bypass upload validation

Impact

Execute uploaded file on server

Vulnerability AssessmentAI

Exploitation	No special conditions — remote unauthenticated exploitation against default installations of projectworlds House Rental and Property Listing 1.0 with signup endpoint accessible at /app/register.php?action=reg. 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 could exploit this vulnerability to compromise the affected system.
Remediation	Monitor vendor advisories for a patch. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 7 days: Identify all affected systems and apply vendor patches promptly. …

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

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CVE-2026-0643 vulnerability details – vuln.today

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PHP CVE-2026-0643

Severity by source

CVSS VectorNVD

Lifecycle Timeline

DescriptionCVE.org

AnalysisAI

Unlock full vulnerability intelligence

Attack ChainAIDerived

Vulnerability AssessmentAI

Recommended ActionAI

More from same product – last 7 days

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External POC / Exploit Code