Gravity SMTP <= 2.1.4 - Unauthenticated Sensitive Information Exposure via REST API
The Gravity SMTP plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 2.1.4. This is due to a REST API endpoint registered at /wp-json/gravitysmtp/v1/tests/mock-data with a permission_callback that unconditionally returns true, allowing any unauthenticated visitor to access it. When the ?page=gravitysmtp-settings query parameter is appended, the plugin's register_connector_data() method populates internal connector data, causing the endpoint to return approximately 365 KB of JSON containing the full System Report. This makes it possible for unauthenticated attackers to retrieve detailed system configuration data including PHP version, loaded extensions, web server version, document root path, database server type and version, WordPress version, all active plugins with versions, active theme, WordPress configuration details, database table names, and any API keys/tokens configured in the plugin.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| WordPress plugin | Gravity SMTP | <= 2.1.4 | 2.1.5 |
References
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N- Weakness (CWE)
CWE-200- Platform
- WordPress
- Package
Gravity SMTP- Disclosed
- 30.03.2026
- Updated
- 11.10.2026 10:22
Sources and licenses
Wordfence Intelligence - 12a296db-ecc0-409b-8718-0c208504053a - Wordfence Intelligence
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Copyright 2012-2026 Defiant Inc.
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Vulnerability history: Gravity SMTP
All published vulnerabilities of this package (WordPress plugin), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 2
- First → latest
- 03.2026 04.2026
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- High 1
- Medium 1
Disclosures per year
- 2026: 2
-
Gravity SMTP <= 2.1.4 - Unauthenticated Sensitive Information Exposure via REST API this entry
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