---
title: "CVE-2026-18143: Request a Quote for WooCommerce - Unrestricted File Upload"
description: "Request a Quote for WooCommerce plugin for WordPress <= 2.9.2 contains an unrestricted file upload vulnerability caused by missing file extension and MIME type validation in afrfq_submit_quote_via_popup(), letting unauthenticated attackers upload executable files, exploit requires enabled public quote rule with multi-page popup flow."
url: https://panop.io/threat-heartbeat/CVE-2026-18143/
---

# CVE-2026-18143 Request a Quote for WooCommerce - Unrestricted File Upload

Request a Quote for WooCommerce plugin for WordPress <= 2.9.2 contains an unrestricted file upload vulnerability caused by missing file extension and MIME type validation in afrfq\_submit\_quote\_via\_popup(), letting unauthenticated attackers upload executable files, exploit requires enabled public quote rule with multi-page popup flow.

CVSS base score 9.8 /10

Critical

CISA KEV

Exploited in the wild

Public exploit

Proof of concept available

Authentication

Not required

EPSS

0.41% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-18143)

## Details

Type

Unrestricted File Upload

Impact

Remote Code Execution, File System Write

CVSS vector

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

Published

26 September 2026

Updated

15 October 2026

Weakness

[CWE-434](https://cwe.mitre.org/data/definitions/434.html)

## Vendor fix

Update to the latest version of Request a Quote for WooCommerce plugin.

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-2026-18143](https://nvd.nist.gov/vuln/detail/CVE-2026-18143)
- [https://patchstack.com/database/wordpress/plugin/woocommerce-request-a-quote/vulnerability/wordpress-request-a-quote-for-woocommerce-plugin-2-9-2-unauthenticated-arbitrary-file-upload-vulnerability](https://patchstack.com/database/wordpress/plugin/woocommerce-request-a-quote/vulnerability/wordpress-request-a-quote-for-woocommerce-plugin-2-9-2-unauthenticated-arbitrary-file-upload-vulnerability)
- [https://github.com/murrez/CVE-2026-18143](https://github.com/murrez/CVE-2026-18143)
- [https://woocommerce.com/products/request-a-quote-plugin-for-woocommerce/](https://woocommerce.com/products/request-a-quote-plugin-for-woocommerce/)
- [https://www.wordfence.com/threat-intel/vulnerabilities/id/3417ec27-6abf-45c7-945f-6ef456ba1187?source=cve](https://www.wordfence.com/threat-intel/vulnerabilities/id/3417ec27-6abf-45c7-945f-6ef456ba1187?source=cve)

[← All CVEs](https://panop.io/threat-heartbeat/)

## 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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