TI-2024-07859 Aliases CVE-2024-8477 GHSA-qc4q-h4wc-9xq4

Cross-site request forgery in neeraj_slit Brevo – Email, SMS, Web Push, Chat, and more.

LOW 19CWE-352Published 2024-10-10 · Updated 2026-04-08

Key facts

Attack vector: Network
Privileges required: None
User interaction: Required
Attack complexity: Low
Impact type: Tampering
Confidentiality · integrity · availability: None · Low · None
Fix status: No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-352.

Summary

The Newsletter, SMTP, Email marketing and Subscribe forms by Brevo (formely Sendinblue) plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 3.1.87. This is due to missing or incorrect nonce validation on the Init() function. This makes it possible for unauthenticated attackers to log out of a Brevo connection via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00179 7th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
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 3.1.87	—	No fix listed	CNA

Brevo – Email, SMS, Web Push, Chat, and more. Vendorneeraj_slit Affected up to 3.1.87 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:brevo:newsletter\,_smtp\,_email_marketing_and_subscribe::::::wordpress::*	before 3.1.88	Vulnerable	Brevo

cpe:2.3:a:brevo:newsletter\,_smtp\,_email_marketing_and_subscribe:*:*:*:*:*:wordpress:*:* Versions before 3.1.88 Vulnerable ·Brevo

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2024-8477
2026-10-03 Alias added: GHSA-qc4q-h4wc-9xq4

References

Patch 1

https://plugins.trac.wordpress.org/changeset/3165451/mailin/tags/3.1.88/page/page-home.php

Advisory 1

https://www.wordfence.com/threat-intel/vulnerabilities/id/e070b422-9036-4362-832b-43fd4838f394?source=cve

TI-2025-13186 Brevo for WooCommerce <= 4.0.49 - Unauthenticated Stored Cross-Site Scripting CVSS 3.1HIGH 7.2
TI-2025-13504 Brevo - Email, SMS, Web Push, Chat, and more. <= 3.3.0 - Unauthenticated Authorization Bypass via Type Juggling CVSS 3.1MEDIUM 6.5
TI-2026-12873 Cross-site scripting in neeraj_slit Brevo – Email, SMS, Web Push, Chat, and more. CVSS 3.1MEDIUM 6.1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences