漏洞描述
Gravity Forms WordPress plugin version 3.1.0.4 and earlier contains an unauthenticated arbitrary file upload vulnerability caused by bypassing extension validation in hidden file upload fields. Unauthenticated attackers can upload any file type including PHP when a form has a File Upload field configured with Hidden visibility. The bypass works because the server-side extension validation is skipped for fields with gfield_visibility_hidden CSS class.
影响产品
暂无结构化产品信息。
修复建议
建议关注厂商安全公告，及时升级至已修复版本，并结合实际资产暴露情况采取缓解措施。
参考链接
github.comhttps://github.com/murrez/CVE-2026-84434↗patchstack.comhttps://patchstack.com/database/wordpress/plugin/gravityforms/vulnerability/wordpress-gravity-forms-plugin-3-1-0-4-unauthenticated-arbitrary-file-upload-via-hidden-file-upload-field-vulnerability↗www.wordfence.comhttps://www.wordfence.com/threat-intel/vulnerabilities/id/787e22a9-329b-4e71-bc2a-4f5524fc9356↗docs.gravityforms.comhttps://docs.gravityforms.com/gravityforms-change-log/↗