CVE-2021-24923
6.1 · MEDIUMOverview
CVE-2021-24923 is a medium-severity vulnerability affecting brevo newsletter\,_smtp\,_email_marketing_and_subscribe. It was published on January 24, 2022 and has a CVSS 3.1 base score of 6.1 (MEDIUM).
This vulnerability has a CVSS 3.1 base score of 6.1, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
The Newsletter, SMTP, Email marketing and Subscribe forms by Sendinblue WordPress plugin before 3.1.25 does not escape the sib-statistics-date parameter before outputting it back in an attribute, leading to a Reflected Cross-Site Scripting issue
Remediation
Check the references section for vendor advisories and patches from brevo. Update newsletter\,_smtp\,_email_marketing_and_subscribe to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| brevo | newsletter\,_smtp\,_email_marketing_and_subscribe | >= 0, < 3.1.25 | Affected |
Frequently Asked Questions
What is CVE-2021-24923?
CVE-2021-24923 is a medium-severity vulnerability affecting brevo newsletter\,_smtp\,_email_marketing_and_subscribe. It was published on January 24, 2022 and has a CVSS 3.1 base score of 6.1 (MEDIUM).
How severe is CVE-2021-24923?
This vulnerability has a CVSS 3.1 base score of 6.1, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2021-24923?
Check the references section for vendor advisories and patches from brevo. Update newsletter\,_smtp\,_email_marketing_and_subscribe to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2021-24923?
CyberStrike's AI-powered security agents can automatically detect CVE-2021-24923 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
Automated penetration testing that runs continuously, not just quarterly.
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Browser-based exploitation validates findings with real proof-of-concept.
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