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
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.008 (55.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 56th percentile — 55.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.008 · change: +0.002
Affected products
- Opensourcepos Open Source Point Of Sale — versions 3.4.1
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/opensourcepos/opensourcepos (Product)
- github.com/hungnqdz/CVE-2026-26746/blob/main/CVE-2026-26746.md (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.