Gravity Forms <= 3.1.2 - Unauthenticated PHP Object Injection via Post Custom Field
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
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| Gravity Forms | Gravity Forms | unaffected |
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| Vendor | Product | Versions | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Gravityforms | Gravity Forms |
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| Wordpress-extensions | Gravity Forms |
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No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.508% probability within 30 days)
| Type | Values Removed | Values Added |
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| First Time appeared |
Gravityforms
Gravityforms gravity Forms Wordpress-extensions Wordpress-extensions gravity Forms |
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| Vendors & Products |
Gravityforms
Gravityforms gravity Forms Wordpress-extensions Wordpress-extensions gravity Forms |
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| Metrics |
ssvc
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| Description | The Gravity Forms plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 3.1.2 via a Post Custom Field whose input type is List. This is due to GFFormsModel::create_post() passing the submitted value to WordPress' unrestricted global maybe_unserialize() rather than the plugin's own hardened GFCommon::maybe_unserialize(), which was added in 3.1.1 and passes allowed_classes => false precisely to prevent object instantiation. Where the field has a content template enabled, the submitted row reaches that call verbatim. This makes it possible for unauthenticated attackers to inject a PHP object into post meta. No PHP Object Injection gadget chain is present in the plugin itself; however, if a gadget chain is present via an additional plugin or theme, it could allow the attacker to perform actions such as remote code execution. Where the custom field is mapped to the protected _wp_page_template meta key, WordPress itself supplies the chain: validate_file() accepts non-scalars, WP_Theme::__toString() then resolves an attacker-controlled path, and on hosts with a readable PEAR install and register_argc_argv enabled this yields remote code execution. | |
| Title | Gravity Forms <= 3.1.2 - Unauthenticated PHP Object Injection via Post Custom Field | |
| Weaknesses | CWE-502 | |
| References |
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| Metrics |
cvssV3_1
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