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 ↗

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

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

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