CVE-2023-6621 - CVE House
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Status published Unknown CVE-2023-6621

Post SMTP < 2.8.7 - Reflected Cross-Site Scripting

Vulnerability 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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • Alex Sanford
  • WPScan

References

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Affected Vendor

Affected Software

POST SMTP
Vulnerable Versions:
0

Timeline

Official Publish: January 3rd, 2024
Last Modified: June 18th, 2025
Added to House: July 22nd, 2026

CVSS Vectors

No vector data available

Weaknesses (CWE)

No CWE data available

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.