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

2026-02-17 00:00

ISMAILSHADOW

Strategic Overview

Status

Patched in 3.3.1

Affected PluginBrevo – Email, SMS, Web Push, Chat, and more.

Affected Version<= 3.3.0

CVSS6.5Medium

CVECVE-2025-14799

View all Brevo – Email, SMS, Web Push, Chat, and more. vulnerabilities

Vulnerability Overview

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.

Technical Analysis

REMEDIATION: Update to version 3.3.1, or a newer patched version --- IDENTIFIER: CWE-843 (Access of Resource Using Incompatible Type ('Type Confusion')) The product allocates or initializes a resource such as a pointer, object, or variable using one type, but it later accesses that resource using a type that is incompatible with the original type.

External References

https://www.cve.org/CVERecord?id=CVE-2025-14799 https://www.wordfence.com/threat-intel/vulnerabilities/id/f29e5b19-2505-4b02-92c7-071833de6bc2

CVSS Vector

6.5

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged
ConfidentialityNone
IntegrityLow
AvailabilityLow

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