Is CVE-2026-14494 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-14494 being exploited in the wild.

How severe is CVE-2026-14494?

Critical severity, with a CVSS score of 9.8, published 29 August 2026.

Which products and versions are affected?

BdThemes Sigma Forms Pro up to and including 1.4.5.

Is there a fix for CVE-2026-14494?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-14494 attacked?

It is attacked over the network, in a web application.

Am I affected by CVE-2026-14494?

Check whether you run BdThemes Sigma Forms Pro at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-14494: Sigma Forms Pro Remote Code Execution via unfiltered upload

CVE-2026-14494 · Severity: critical · CVSS 9.8 · Published 2026-08-29

Sigma Forms Pro is a WordPress plugin used to create and manage web forms with file upload capabilities. A critical vulnerability allows unauthenticated attackers to upload and execute arbitrary code on the website by exploiting improper file type validation in the form submission handler. Several default form templates ship with no file restrictions, making the vulnerability exploitable immediately after plugin installation without any configuration changes.

Vendors: BdThemes.

Quick answers

Is CVE-2026-14494 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-14494 being exploited in the wild.
How severe is CVE-2026-14494?: Critical severity, with a CVSS score of 9.8, published 29 August 2026.
Which products and versions are affected?: BdThemes Sigma Forms Pro up to and including 1.4.5.
Is there a fix for CVE-2026-14494?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-14494 attacked?: It is attacked over the network, in a web application.
Am I affected by CVE-2026-14494?: Check whether you run BdThemes Sigma Forms Pro at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The vulnerability exists in the handle_form_submission function, which dynamically grants the unfiltered_upload capability to all users during form processing and fails to validate file types when the allowed_file_types setting is not configured. An unauthenticated attacker can exploit this by submitting a form with a malicious file (e.g., PHP shell) via one of the default pre-built form templates (Job Application, Support Ticket, Wholesale Application) that have file upload fields with no type restrictions by design. This allows arbitrary file uploads and code execution on the server. The vulnerability affects all versions up to and including 1.4.5.

Affected products

BdThemes Sigma Forms Pro up to and including 1.4.5

Timeline

2026-08-29: disclosed

References

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