CVE-2024-8477

Newsletter, SMTP, Email marketing and Subscribe forms by Brevo (formely Sendinblue) <= 3.1.87 - Cross-Site Request Forgery

MEDIUM
4.3
CVSS Score
Published: October 10, 2024 at 02:06 AM UTC
Updated: June 17, 2026 at 08:22 AM UTC
2 products affected across 2 vendorsNewsletter , Smtp , Email Marketing and SubscribeBrevo

Using Newsletter, SMTP, Email marketing and Subscribe forms by Brevo (formely Sendinblue) by neeraj_slit?

Get instant alerts when new vulnerabilities affect Newsletter, SMTP, Email marketing and Subscribe forms by Brevo (formely Sendinblue) - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Severity
MEDIUM4.3
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 3.1.88
Affected range stops below 3.1.88, so it looks safe — our inference, not a vendor statement
Brevo· Neeraj Slitwordpress-plugin
60%
v ≤ 3.1.87

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

4.3MEDIUMWordfence
Vector?

Quick Info

StatusANALYZED
CWE
CWE-352

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Free plan, no card