WPForms Pro <= 1.10.1.1 - Unauthenticated Arbitrary File Write via Chunked Upload Init/Finalize Ordering
| CVE | CVE-2026-10818 |
|---|---|
| CVSS | 8.1 (High) |
| Publicly Published | July 24, 2026 |
| Last Updated | July 25, 2026 |
| Researcher |
lhking
|
Description
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 and file contents have already been written to disk, and the assembled file not being deleted upon validation failure. This makes it possible for unauthenticated attackers to upload files that may be executable, which makes remote code execution possible.
Learn more about Arbitrary File Upload vulnerabilities and how to prevent them.
References
Share
Vulnerability Details for WPForms Pro
| Software Type | Plugin |
|---|---|
| Software Slug | wpforms |
| Patched? | Yes |
| Remediation | Update to version 2.0.0, or a newer patched version |
| Affected Version |
|
| Patched Version |
|
Recent vulnerabilities in WPForms Pro
| # | Title | CVE ID | CVSS | Researchers | Date |
|---|---|---|---|---|---|
| 1 | WPForms Pro 1.8.4 - 1.8.5.3 - Unauthenticated Stored Cross-Site Scripting via Form Submission | CVE-2023-7063 | drop | January 19, 2024 | |
| 2 | Contact Form by WPForms (Free and Premium) <= 1.8.1.2 - Reflected Cross-Site Scripting | CVE-2023-30500 | Rafie Muhammad | June 20, 2023 | |
| 3 | WPForms Pro <= 1.7.6 - CSV Injection | CVE-2022-3574 | Francesco Carlucci | October 19, 2022 |
This record contains material that is subject to copyright.
Copyright 2012-2026 Defiant Inc.
License: Defiant hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute this software vulnerability information. Any copy of the software vulnerability information you make for such purposes is authorized provided that you include a hyperlink to this vulnerability record and reproduce Defiant's copyright designation and this license in any such copy. Read more.
Copyright 1999-2026 The MITRE Corporation
License: CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE®). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy. Read more.
Have information to add, or spot any errors? Contact us at wfi-support@wordfence.com so we can make any appropriate adjustments.
Did you know Wordfence Intelligence provides free personal and commercial API access to our comprehensive WordPress vulnerability database, along with a free webhook integration to stay on top of the latest vulnerabilities added and updated in the database? Get started today!
Learn moreWant to get notified of the latest vulnerabilities that may affect your WordPress site?
Install Wordfence on your site today to get notified immediately if your site is affected by a vulnerability that has been added to our database.
The Wordfence Intelligence WordPress vulnerability database is completely free to access and query via API. Please review the documentation on how to access and consume the vulnerability data via API.
Documentation