What is CVE-2026-26746?

CVE-2026-26746 is a high-severity vulnerability in Opensourcepos Open Source Point Of Sale, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 8.8/10. Published 2026-02-20.

How severe is CVE-2026-26746?

High severity. CVSS v3 base score is 8.8 out of 10.

Is CVE-2026-26746 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Arbitrary file upload in Opensourcepos Open Source Point Of Sale

CVE-2026-26746

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).

Vulnerability class: Unrestricted File Upload

EPSS: 0.006 (44.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Opensourcepos Open_source_point_of_sale — versions 3.4.1
N/a — versions n/a

Weakness classification (CWE)

CWE-434 — Unrestricted Upload of File with Dangerous Type

Public proof-of-concept exploits

hungnqdz/CVE-2026-26746

References

cve@mitre.org (Product)
cve@mitre.org (Exploit, Third Party Advisory, Mitigation)

Frequently asked questions

What is CVE-2026-26746?: CVE-2026-26746 is a high-severity vulnerability in Opensourcepos Open Source Point Of Sale, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 8.8/10. Published 2026-02-20.
How severe is CVE-2026-26746?: High severity. CVSS v3 base score is 8.8 out of 10.
Is CVE-2026-26746 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.