Rocketgenius Gravity Forms Plugin up to 2.9.21.1 on WordPress Legacy Chunked Upload unrestricted upload

Summaryinfo

A vulnerability, which was classified as critical, was found in Rocketgenius Gravity Forms Plugin up to 2.9.21.1 on WordPress. Impacted is an unknown function of the component Legacy Chunked Upload. Executing a manipulation can lead to unrestricted upload. This vulnerability is handled as CVE-2025-12974. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in Rocketgenius Gravity Forms Plugin up to 2.9.21.1 on WordPress. It has been declared as critical. This vulnerability affects some unknown functionality of the component Legacy Chunked Upload. The manipulation with an unknown input leads to a unrestricted upload vulnerability. The CWE definition for the vulnerability is CWE-434. The product allows the attacker to upload or transfer files of dangerous types that can be automatically processed within the product's environment. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

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.

The advisory is shared for download at wordfence.com. This vulnerability was named CVE-2025-12974. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 11/19/2025). The MITRE ATT&CK project declares the attack technique as T1608.002.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at CNNVD (CNNVD-202511-2136). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

• WordPress Plugin

Vendor

• Rocketgenius

Name

• Gravity Forms Plugin

Version

• 2.9.21.0
• 2.9.21.1

CPE 2.3info

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• 🔒

CPE 2.2info

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Entryinfo

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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