What’s Vulnerable › Vulnerabilities

CVE-2025-14799: Brevo - Email, SMS, Web Push, Chat, and more. <= 3.3.0 - Unauthenticated Authorization Bypass via Type Juggling

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-02-18 · updated 2026-06-17
• Weakness: CWE-843

Description

The Brevo - Email, SMS, Web Push, Chat, and more. plugin for WordPress is vulnerable to authorization bypass due to type juggling in all versions up to, and including, 3.3.0. This is due to the use of loose comparison (==) instead of strict comparison (===) when validating the installation ID in the `/wp-json/mailin/v1/mailin_disconnect` REST API endpoint. This makes it possible for unauthenticated attackers to disconnect the Brevo integration, delete the API key, remove all subscription forms, and reset plugin settings by sending a boolean `true` value for the `id` parameter, which bypasses the authorization check through PHP type juggling.

Affected products

• neeraj_slit Brevo – Email, SMS, Web Push, Chat, and more.: through 3.3.0

References

• https://plugins.trac.wordpress.org/browser/mailin/tags/3.2.9/sendinblue.php#L1795
• https://plugins.trac.wordpress.org/browser/mailin/tags/3.2.9/sendinblue.php#L1833
• https://plugins.trac.wordpress.org/changeset/3448639/
• https://www.wordfence.com/threat-intel/vulnerabilities/id/f29e5b19-2505-4b02-92c7-071833de6bc2?source=cve

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