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CVE-2023-6621

MEDIUM 6.1 CVSS 3.1
Published
January 3, 2024
Last modified
June 17, 2026
NVD status
Modified
Reported by
contact@wpscan.com
Weakness
CWE-79
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Description

The POST SMTP WordPress plugin before 2.8.7 does not sanitise and escape the msg parameter before outputting it back in the page, leading to a Reflected Cross-Site Scripting which could be used against high privilege users such as admin.

Affected WordPress components

  • Post SMTP – Complete Email Deliverability and SMTP Solution with Email Logs, Alerts, Backup SMTP & Mobile App Plugin · post-smtp
    Confirmed match Active
    Before 2.8.7
    View on WordPress.org

A confirmed match is backed by the plugin or theme slug. A possible match is based on the product name only and should be verified.

Affected products and versions

  • Unknown POST SMTP — Before 2.8.7
  • wpexperts post_smtp — Before 2.8.7

References

  • wpscan.com https://wpscan.com/vulnerability/b49ca336-5bc2-4d72-a9a5-b8c020057928 Exploit, Third Party Advisory
  • nvd.nist.gov Official NVD record