CVE-2025-6679
WordPress vulnerability analysis and mitigation

Overview

The Bit Form builder plugin for WordPress contains an arbitrary file upload vulnerability (CVE-2025-6679) discovered on August 15, 2025. This vulnerability affects all versions up to and including 2.20.4. The issue exists due to missing file type validation in the plugin, which allows unauthenticated attackers to upload arbitrary files to affected sites' servers. The vulnerability requires the PRO version to be installed and activated, along with a published form containing an advanced file upload element (NVD).

Technical details

The vulnerability is classified as CWE-434 (Unrestricted Upload of File with Dangerous Type) and has received a CVSS v3.1 base score of 9.8 CRITICAL (Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H). The issue stems from inadequate file type validation in the advanced file upload functionality, which is specifically available in the PRO version of the plugin (NVD).

Impact

If exploited, this vulnerability could allow unauthenticated attackers to upload arbitrary files to the affected website's server, potentially leading to remote code execution. The high severity score reflects the critical nature of the potential impact on affected systems (NVD).

Mitigation and workarounds

The vulnerability has been addressed in version 2.20.4 with enhanced file upload security that strictly blocks uploading of executable files. Site administrators are strongly advised to update to this version immediately. The fix specifically focuses on file type validation improvements (WordPress Plugin).

Additional resources


SourceThis report was generated using AI

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