---
title: "CVE-2026-108973: SourceCodester Contact Tracing System - Unrestricted File Upload"
description: "SourceCodester Contact Tracing System 1.0 contains an unrestricted file upload vulnerability caused by improper validation in move_uploaded_file function in /classes/Users.php?f=save, letting remote attackers upload arbitrary files, exploit requires no special privileges."
url: https://panop.io/threat-heartbeat/CVE-2026-108973/
---

# CVE-2026-108973 SourceCodester Contact Tracing System - Unrestricted File Upload

SourceCodester Contact Tracing System 1.0 contains an unrestricted file upload vulnerability caused by improper validation in move\_uploaded\_file function in /classes/Users.php?f=save, letting remote attackers upload arbitrary files, exploit requires no special privileges.

CVSS base score 7.3 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Not required

EPSS

0.29% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-108973)

## Details

Type

Unrestricted File Upload

Impact

Remote Code Execution

CVSS vector

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

Published

13 October 2026

Updated

15 October 2026

Weakness

[CWE-284](https://cwe.mitre.org/data/definitions/284.html)

## Vendor fix

Update to the latest version or apply patches that restrict file upload validation.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-108973](https://nvd.nist.gov/vuln/detail/CVE-2026-108973)
- [https://vuldb.com/vuln/416792/cti](https://vuldb.com/vuln/416792/cti)
- [https://www.sourcecodester.com/](https://www.sourcecodester.com/)
- [https://tracexlabs.com/releases/contact-tracing-preauth-rce.html](https://tracexlabs.com/releases/contact-tracing-preauth-rce.html)
- [https://vuldb.com/cve/CVE-2026-108973](https://vuldb.com/cve/CVE-2026-108973)
- [https://vuldb.com/submit/1000527](https://vuldb.com/submit/1000527)
- [https://vuldb.com/vuln/416792](https://vuldb.com/vuln/416792)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

Panop answers these inside your environment, for this CVE and every other finding.

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