What is CVE-2021-24874?

CVE-2021-24874 is a medium-severity vulnerability in Brevo Newsletter\,_smtp\,_email_marketing_and_subscribe, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2022-02-14.

How severe is CVE-2021-24874?

Medium severity. CVSS v3 base score is 6.1 out of 10.

Is CVE-2021-24874 known to be exploited?

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

XSS in Brevo Newsletter\,_smtp\,_email_marketing_and_subscribe

CVE-2021-24874

The Newsletter, SMTP, Email marketing and Subscribe forms by Sendinblue WordPress plugin before 3.1.31 does not escape the lang and pid parameter before outputting them back in attributes, leading to Reflected Cross-Site Scripting issues

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.008 (51.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

Affected products

Brevo Newsletter\,_smtp\,_email_marketing_and_subscribe
Unknown Newsletter, Smtp, Email Marketing And Subscribe Forms By Sendinblue — versions 3.1.31

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

20142995/nuclei-templates

References

contact@wpscan.com (Exploit, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2021-24874?: CVE-2021-24874 is a medium-severity vulnerability in Brevo Newsletter\,_smtp\,_email_marketing_and_subscribe, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2022-02-14.
How severe is CVE-2021-24874?: Medium severity. CVSS v3 base score is 6.1 out of 10.
Is CVE-2021-24874 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.