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TI-2021-07203 Aliases CVE-2021-24923GHSA-pfq2-x69w-983r

Newsletter, SMTP, Email marketing and Subscribe forms by Sendinblue < 3.1.25 - Reflected XSS

Priority LOW 29CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
Low · Low · None
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-79.

Summary

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

Why it matters now

EPSS 0.0081 57th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed Newsletter, SMTP, Email marketing and Subscribe forms by Sendinblue (Unknown): 3.1.25

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
UnknownNewsletter, SMTP, Email marketing and Subscribe forms by Sendinblue3.1.25 to before 3.1.253.1.25Patch availableCNA
  • Newsletter, SMTP, Email marketing and Subscribe forms by Sendinblue VendorUnknown Affected 3.1.25 to before 3.1.25 Fixed in 3.1.25 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:brevo:newsletter\,_smtp\,_email_marketing_and_subscribe:*:*:*:*:*:wordpress:*:*before 3.1.25VulnerableBrevo
  • cpe:2.3:a:brevo:newsletter\,_smtp\,_email_marketing_and_subscribe:*:*:*:*:*:wordpress:*:* Versions before 3.1.25 Vulnerable ·Brevo

Remediation

  • Fix · CNA Newsletter, SMTP, Email marketing and Subscribe forms by Sendinblue (Unknown) Fixed in 3.1.25

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-24923
  2. 2026-10-03 Alias added: GHSA-pfq2-x69w-983r

References

Exploit 1

  • TI-2023-02321 Newsletter, SMTP, Email marketing and Subscribe forms by Sendinblue < 3.1.61 - Reflected XSS CVSS 3.1MEDIUM 6.1
  • TI-2024-23537 Cross-site scripting in Brevo Newsletter, SMTP, Email marketing and Subscribe forms by… CVSS 3.1HIGH 7.1
  • TI-2021-07156 Newsletter, SMTP, Email marketing and Subscribe forms by Sendinblue < 3.1.31 - Reflected Cross-Site Scripting CVSS 3.1MEDIUM 6.1
  • TI-2024-07859 Cross-site request forgery in neeraj_slit Brevo – Email, SMS, Web Push, Chat, and more. CVSS 3.1MEDIUM 4.3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences