CVE-2026-82901: CWE-434 Unrestricted Upload of File with Dangerous Type in themefic Ultra Addons for Contact Form 7
The Ultra Addons for Contact Form 7 WordPress plugin up to version 3.5.50 contains an arbitrary file upload vulnerability due to insufficient file type validation in the 'uacf7_wpcf7_mail_components' function. This vulnerability allows unauthenticated attackers to upload arbitrary files to the server, potentially leading to remote code execution. Exploitation requires the plugin's PDF Generator module to be enabled, which is disabled by default.
AI Analysis
Technical Summary
CVE-2026-82901 is a critical vulnerability in the Ultra Addons for Contact Form 7 WordPress plugin (versions up to 3.5.50) caused by improper validation of uploaded file types in the 'uacf7_wpcf7_mail_components' function. This weakness (CWE-434) permits unauthenticated attackers to upload arbitrary files when the PDF Generator module is enabled, potentially enabling remote code execution on the affected server.
Potential Impact
Successful exploitation allows unauthenticated attackers to upload arbitrary files to the web server, which may lead to remote code execution, full compromise of the affected WordPress site, and potential further attacks against the hosting environment. The impact is high confidentiality, integrity, and availability loss.
Mitigation Recommendations
No official patch or fix is currently confirmed. Since exploitation requires the PDF Generator module to be enabled (which is disabled by default), ensure this module remains disabled if not needed. Monitor the vendor advisory for updates and apply any official patches once available. Until then, restrict plugin usage and consider disabling or removing the plugin if the PDF Generator module is required and cannot be safely enabled.
CVE-2026-82901: CWE-434 Unrestricted Upload of File with Dangerous Type in themefic Ultra Addons for Contact Form 7
Description
The Ultra Addons for Contact Form 7 WordPress plugin up to version 3.5.50 contains an arbitrary file upload vulnerability due to insufficient file type validation in the 'uacf7_wpcf7_mail_components' function. This vulnerability allows unauthenticated attackers to upload arbitrary files to the server, potentially leading to remote code execution. Exploitation requires the plugin's PDF Generator module to be enabled, which is disabled by default.
CVSS v3.1
Score 9.8critical
Affected software
themefic
Ultra Addons for Contact Form 7
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-82901 is a critical vulnerability in the Ultra Addons for Contact Form 7 WordPress plugin (versions up to 3.5.50) caused by improper validation of uploaded file types in the 'uacf7_wpcf7_mail_components' function. This weakness (CWE-434) permits unauthenticated attackers to upload arbitrary files when the PDF Generator module is enabled, potentially enabling remote code execution on the affected server.
Potential Impact
Successful exploitation allows unauthenticated attackers to upload arbitrary files to the web server, which may lead to remote code execution, full compromise of the affected WordPress site, and potential further attacks against the hosting environment. The impact is high confidentiality, integrity, and availability loss.
Mitigation Recommendations
No official patch or fix is currently confirmed. Since exploitation requires the PDF Generator module to be enabled (which is disabled by default), ensure this module remains disabled if not needed. Monitor the vendor advisory for updates and apply any official patches once available. Until then, restrict plugin usage and consider disabling or removing the plugin if the PDF Generator module is required and cannot be safely enabled.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Wordfence
- Date Reserved
- 2026-08-31T09:23:20.843Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6ab81385f7a7c541069b6828
Added to database: 09/26/2026, 18:48:37 UTC
Last enriched: 09/26/2026, 19:02:41 UTC
Last updated: 09/26/2026, 19:49:01 UTC
Views: 7
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