Brevo - Email, SMS, Web Push, Chat, and more. <= 3.3.0 - Unauthenticated Authorization Bypass via Type Juggling
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · Low · Low
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| neeraj_slit | Brevo – Email, SMS, Web Push, Chat, and more. | up to 3.3.0 | — | No fix listed | CNA |
- Brevo – Email, SMS, Web Push, Chat, and more. Vendorneeraj_slit Affected up to 3.3.0 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2025-14799
- 2026-10-03 Alias added: GHSA-2pc4-pm2m-q53r
References
Other 4
- https://www.wordfence.com/threat-intel/vulnerabilities/id/f29e5b19-2505-4b02-92c7-071833de6bc2?source=cve
- https://plugins.trac.wordpress.org/browser/mailin/tags/3.2.9/sendinblue.php#L1833
- https://plugins.trac.wordpress.org/browser/mailin/tags/3.2.9/sendinblue.php#L1795
- https://plugins.trac.wordpress.org/changeset/3448639/
More neeraj_slit vulnerabilities
- TI-2025-13186 Brevo for WooCommerce <= 4.0.49 - Unauthenticated Stored Cross-Site Scripting CVSS 3.1HIGH 7.2
- TI-2026-12873 Cross-site scripting in neeraj_slit Brevo – Email, SMS, Web Push, Chat, and more. CVSS 3.1MEDIUM 6.1
Sources
- CVE-2025-14799 · CVE Program
- CVE-2025-14799 · NVD
- FIRST EPSS
- GHSA-2pc4-pm2m-q53r · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences