CVE-2025-12974Gravity Forms <= 2.9.21.1 - Unauthenticated Arbitrary File Upload via Legacy Chunked Upload
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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The Gravity Forms plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the legacy chunked upload mechanism in all versions up to, and including, 2.9.21.1. This is due to the extension blacklist not including .phar files, which can be uploaded through the chunked upload mechanism. This makes it possible for unauthenticated attackers to upload executable .phar files and achieve remote code execution on the server, granted they can discover or enumerate the upload path. In order for an attacker to achieve RCE, the web server needs to be set up to process .phar file as PHP via file handler mapping or similar.
- CVSS
- 8.1 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-434
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Wordfence
- NVD analysis
- Deferred
- Record last updated
- Apr 8, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Gravity Forms Gravity Forms gravity_forms:gravity_forms (from the name) | through 2.9.21.1 | CNA record |
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/b6395439-da45-4b64-8e30-b106dffd46c1?source=cve
- https://github.com/pronamic/gravityforms/blob/06de1b7e169e4f073e9d0d491e17b89365b48c20/includes/upload.php#L97
- https://github.com/pronamic/gravityforms/blob/06de1b7e169e4f073e9d0d491e17b89365b48c20/common/common.php#L4178
- https://docs.gravityforms.com/gravityforms-change-log/
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.