What is CVE-2026-14494?

CVE-2026-14494 is a critical-severity vulnerability in Bdthemes Sigmaforms Pro – Ai Generated Forms, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.8/10. Published 2026-08-29.

How severe is CVE-2026-14494?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Arbitrary file upload in Bdthemes Sigmaforms Pro – Ai Generated Forms

CVE-2026-14494

The Sigma Forms Pro plugin for WordPress is vulnerable to Remote Code Execution in all versions up to, and including, 1.4.5 via the handle_form_submission function. This is due to the plugin dynamically granting the unfiltered_upload capability to all users during form submissions and bypassing MIME type validation when allowed_file_types is not configured. This makes it possible for unauthenticated attackers to execute code on the server. Several default pre-built templates including Job Application, Support Ticket, and Wholesale Application have file upload fields with no file type restrictions configured by design, making this vulnerability immediately exploitable upon installation.

Vulnerability class: Unrestricted File Upload

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Bdthemes Sigmaforms Pro – Ai Generated Forms

Weakness classification (CWE)

CWE-434 — Unrestricted Upload of File with Dangerous Type

References

Frequently asked questions

What is CVE-2026-14494?: CVE-2026-14494 is a critical-severity vulnerability in Bdthemes Sigmaforms Pro – Ai Generated Forms, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.8/10. Published 2026-08-29.
How severe is CVE-2026-14494?: Critical severity. CVSS v3 base score is 9.8 out of 10.