What is CVE-2024-8477?

CVE-2024-8477 is a medium-severity vulnerability in Brevo Newsletter\, Smtp\, Email Marketing And Subscribe, classified under Cross-Site Request Forgery (CSRF). CVSS score: 4.3/10. Published 2024-10-10.

How severe is CVE-2024-8477?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Is CVE-2024-8477 known to be exploited?

3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

CSRF in Brevo Newsletter\, Smtp\, Email Marketing And Subscribe

CVE-2024-8477

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.

Vulnerability class: CSRF (Cross-Site Request Forgery)

EPSS: 0.002 (6.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N.

Affected products

Weakness classification (CWE)

CWE-352 — Cross-Site Request Forgery (CSRF)

Public proof-of-concept exploits

References

security@wordfence.com (Third Party Advisory)
security@wordfence.com (Patch)

Frequently asked questions

What is CVE-2024-8477?: CVE-2024-8477 is a medium-severity vulnerability in Brevo Newsletter\, Smtp\, Email Marketing And Subscribe, classified under Cross-Site Request Forgery (CSRF). CVSS score: 4.3/10. Published 2024-10-10.
How severe is CVE-2024-8477?: Medium severity. CVSS v3 base score is 4.3 out of 10.
Is CVE-2024-8477 known to be exploited?: 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.