Is CVE-2026-103541 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-103541 being exploited in the wild.

How severe is CVE-2026-103541?

Medium severity, with a CVSS score of 6.3, published 1 October 2026.

Which products and versions are affected?

Formtools.Org Form Tools up to 3.1.1.

How is CVE-2026-103541 attacked?

It is attacked over the network.

Am I affected by CVE-2026-103541?

Check whether you run Formtools.Org Form Tools 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-2026-103541: Form Tools arbitrary PHP upload in smart_fill handler

CVE-2026-103541 · Severity: medium · CVSS 6.3 · Published 2026-10-01

Form Tools is a web form creation and submission platform. The smart_fill feature allows any authenticated user, including low-privileged clients, to upload PHP files to a web-accessible directory without validation, enabling remote code execution with web server privileges. An attacker with a valid user account can upload and execute a PHP web shell to compromise the server.

Technologies: Formtools.Org Form Tools. Vendors: Formtools.Org.

Quick answers

Is CVE-2026-103541 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-103541 being exploited in the wild.
How severe is CVE-2026-103541?: Medium severity, with a CVSS score of 6.3, published 1 October 2026.
Which products and versions are affected?: Formtools.Org Form Tools up to 3.1.1.
Is there a fix for CVE-2026-103541?: No fixed version is recorded yet. Disable PHP script execution in the upload directory via web server configuration (.htaccess or nginx rules); store uploaded files outside the web root; restrict smart_fill uploads to administrators only. These can be applied pending a product update. 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-2026-103541 attacked?: It is attacked over the network.
Am I affected by CVE-2026-103541?: Check whether you run Formtools.Org Form Tools 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.

How to fix

Disable PHP script execution in the upload directory via web server configuration (.htaccess or nginx rules); store uploaded files outside the web root; restrict smart_fill uploads to administrators only. These can be applied pending a product update.

Technical details

The vulnerability exists in the Ajax handler (global/code/actions.php) which processes smart_fill upload requests via the upload_scraped_page_for_smart_fill action. The Files::uploadFile() function in Files.class.php performs no extension, MIME type, or content validation before moving uploaded files to the web-accessible upload directory with chmod 0777. Any authenticated user satisfying checkAuth('user', false) can exploit this, and the endpoint lacks CSRF protection, allowing cross-site request forgery from authenticated victims.

Affected products

formtools.org Form Tools up to 3.1.1

Timeline

2026-09-03: disclosed
2026-10-01: advisory

References

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