Is CVE-2026-10818 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-10818 being exploited in the wild.

How severe is CVE-2026-10818?

High severity, with a CVSS score of 8.1, published 25 July 2026.

Which products and versions are affected?

WPForms Pro up to, and including, 1.10.1.1.

Is there a fix for CVE-2026-10818?

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-2026-10818 attacked?

It is attacked over the network, in a software library.

Am I affected by CVE-2026-10818?

Check whether you run WPForms 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-2026-10818: WPForms WPForms Pro arbitrary file upload in ajax_chunk_upload_finalize

CVE-2026-10818 · Severity: high · CVSS 8.1 · Published 2026-07-25

WPForms Pro, a popular WordPress plugin used by millions to create website forms, contains a security flaw in its file upload feature. An attacker can bypass security checks to upload malicious files to the web server. If successful, this could allow the attacker to take complete control of the website, potentially leading to data theft or service disruption.

Vendors: WPForms.

Quick answers

Is CVE-2026-10818 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-10818 being exploited in the wild.
How severe is CVE-2026-10818?: High severity, with a CVSS score of 8.1, published 25 July 2026.
Which products and versions are affected?: WPForms Pro up to, and including, 1.10.1.1.
Is there a fix for CVE-2026-10818?: 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-2026-10818 attacked?: It is attacked over the network, in a software library.
Am I affected by CVE-2026-10818?: Check whether you run WPForms 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 WPForms Pro plugin for WordPress is vulnerable to Arbitrary File Upload in versions up to 1.10.1.1. The flaw exists within the 'ajax_chunk_upload_finalize' function, where file type validation is performed only after the file chunks and metadata have been written to the disk. Because the plugin fails to delete the assembled file if validation fails, an unauthenticated attacker can successfully place executable files on the server. This vulnerability can be leveraged to achieve remote code execution (RCE). The attack complexity is rated as high, likely due to the specific requirements of the chunked upload process.

Affected products

WPForms WPForms Pro up to, and including, 1.10.1.1

Timeline

2026-07-25: disclosed: CVE published to NVD dataset

References

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