Arbitrary file upload in Wpforms Pro

CVE-2026-10818

The WPForms Pro plugin for WordPress is vulnerable to Arbitrary File Upload in all versions up to, and including, 1.10.1.1 via the ajax_chunk_upload_finalize function. This is due to the file type validation occurring after chunk metadata…

Vulnerability class: Unrestricted File Upload

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-10818?
CVE-2026-10818 is a high-severity vulnerability in Wpforms Pro, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 8.1/10. Published 2026-07-25.
How severe is CVE-2026-10818?
High severity. CVSS v3 base score is 8.1 out of 10.