CVE-2026-26746
HIGHCVSS Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
3Description
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).
Analysis
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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Remediation
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. …
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External POC / Exploit Code
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