What is the CVSS score of CVE-2026-26746?

CVE-2026-26746 has a CVSS 3.1 base score of 8.8 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.3%.

Which versions of PHP are affected by CVE-2026-26746?

Open Source Point Of Sale (OSPOS) systems up to version 3.4.1 contain a critical file upload vulnerability that could allow attackers to execute arbitrary code on affected systems.

Is there a public PoC exploit available for CVE-2026-26746?

Yes, a public proof-of-concept exploit is available for CVE-2026-26746. Prioritise patching immediately. EPSS: 0.3%.

How to fix or mitigate CVE-2026-26746?

Within 24 hours: Identify all systems running OSPOS versions 3.4.1 or earlier and isolate them from production networks if possible; disable file upload functionality if available. Within 7 days: Implement compensating controls including WAF rules to block malicious file uploads, restrict upload directories to non-executable locations, and enforce strict file type validation. Within 30 days: Evaluate alternative POS solutions or contact vendor for timeline on patch availability; consider upgrading to a patched version when released or implement complete network segmentation for affected systems.

PHP CVE-2026-26746

HIGH

Unrestricted Upload of File with Dangerous Type (CWE-434)

2026-02-20 cve@mitre.org

PHP RCE LFI Open Source Point Of Sale

8.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

8.8 HIGH

AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 22:04 vuln.today

PoC Detected

Feb 24, 2026 - 20:42 vuln.today

Public exploit code

CVE Published

Feb 20, 2026 - 17:25 nvd

HIGH 8.8

DescriptionCVE.org

OpenSourcePOS 3.4.1 contains a Local File Inclusion (LFI) vulnerability in the Sales.php::getInvoice() function. An attacker can read arbitrary files on the web server by manipulating the Invoice Type configuration. This issue can be chained with the file upload functionality to achieve Remote Code Execution (RCE).

AnalysisAI

Open Source Point Of Sale versions up to 3.4.1 is affected by unrestricted upload of file with dangerous type (CVSS 8.8).

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access

Authenticate to OpenSourcePOS

Delivery

Manipulate Invoice Type parameter in Sales.php

Exploit

Include arbitrary file via LFI

Execution

Upload malicious file

Impact

Execute code on server

Access

Authenticate to OpenSourcePOS

Delivery

Manipulate Invoice Type parameter in Sales.php

Exploit

Include arbitrary file via LFI

Execution

Upload malicious file

Impact

Execute code on server

Vulnerability AssessmentAI

Exploitation	OpenSourcePOS 3.4.1 with authenticated user access (PR:L). … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment	CVSS 8.8 (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 24 hours: Identify all systems running OSPOS versions 3.4.1 or earlier and isolate them from production networks if possible; disable file upload functionality if available. …

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

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CVE-2026-26746 vulnerability details – vuln.today

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PHP CVE-2026-26746

Severity by source

CVSS VectorNVD

Lifecycle Timeline

DescriptionCVE.org

AnalysisAI

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Attack ChainAIDerived

Vulnerability AssessmentAI

Recommended ActionAI

More from same product – last 7 days

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External POC / Exploit Code