CVE-2021-24874

Name: CVE-2021-24874
Creator: NVD / NIST
Published: 2022-02-14T12:15:14.573+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.1/10EPSS 0.79%

Last modified Jun 17, 2026

CVE-2021-24874 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. 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. EPSS estimates a 0.79% chance of exploitation in the next 30 days.

Description

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

Metrics

CVSS 3.1

6.1/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS Probability

0.79%

51.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Brevo	Newsletter\, Smtp\, Email Marketing And Subscribe	< 3.1.31

References

https://wpscan.com/vulnerability/28d34cc1-2294-4409-a60f-c8c441eb3f2dExploit, Third Party Advisory
https://wpscan.com/vulnerability/28d34cc1-2294-4409-a60f-c8c441eb3f2dExploit, Third Party Advisory

Timeline

Published: Feb 14, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-24874?

How severe is CVE-2021-24874?

CVE-2021-24874 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 0.79% probability of exploitation in the next 30 days.

How do I fix CVE-2021-24874?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-24874?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST