CVE-2026-84434

The Gravity Forms plugin for WordPress is vulnerable to Arbitrary File Upload in all versions up to, and including, 3.1.0.4 via the upload_file function. This is due to a mismatch between the field validation pipeline and the file persistence pipeline, where hidden file upload fields bypass extension validation and a rejected file's intact upload state is later passed to upload_file() without re-validation. This makes it possible for unauthenticated attackers to upload files that may be executable, which makes remote code execution possible. Exploitation requires the targeted form to contain a File Upload field with its Visibility set to 'Hidden'; the vulnerability is reachable by unauthenticated attackers on any publicly accessible form meeting this condition.

• CWE-434

• https://docs.gravityforms.com/gravityforms-change-log/
• https://www.wordfence.com/threat-intel/vulnerabilities/id/787e22a9-329b-4e71-bc2a-4f5524fc9356?source=cve

Published

Sep 19, 2026

Last Modified

Sep 19, 2026

Status

Received

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2026-84427A vulnerability was determined in zhayujie CowAgent up to 2.…4.3
• CVE-2026-84428fastify versions before 5.12.2 implement the case-insensitiv…7.5
• CVE-2026-8443The WP Review Slider Pro plugin for WordPress is vulnerable …8.8
• CVE-2026-84430A security vulnerability has been detected in gouguoa up to …6.3
• CVE-2026-84431A vulnerability was detected in AirAsia MOVE App up to 12.47…4.4
• CVE-2026-84432Concrete CMS 9 through 9.5.2 did not validate an anti-CSRF …5.3
• CVE-2026-84437A vulnerability was found in OpenCart 4.1.0.3/4.1.0.4. The i…3.5
• CVE-2026-84438A vulnerability was determined in OpenCart 4.1.0.3/4.1.0.4. …3.5
• CVE-2026-84439When audit logging is enabled (zookeeper.audit.enable=true),…5.3
• CVE-2026-8444The WP Review Slider Pro plugin for WordPress is vulnerable …8.8
• CVE-2026-84441A security vulnerability has been detected in Piwigo up to 1…7.3
• CVE-2026-84442A vulnerability was identified in MapQuest Get Directions Ap…4.4