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CRITICAL

CVE-2026-84434

CVSS v3

9.8

CRITICAL

EPSS Score

3.9 %

exploit probability, as of 2026-09-25

CISA KEV

No

known exploited

Exploitation

—

SSVC status

Description

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 executab

Technical details

Published
2026-09-19
Last Modified
2026-09-19

Frequently asked questions

What is 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 executab

Is CVE-2026-84434 actively exploited?

Active exploitation of CVE-2026-84434 has not been confirmed. Its EPSS score was 3.9% on 2026-09-25, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-84434?

CVE-2026-84434 has a CVSS v3 base score of 9.8 (CRITICAL severity).

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