How severe is CVE-2023-6629?

Medium severity. CVSS v3 base score is 6.1 out of 10.

Is CVE-2023-6629 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

XSS in Saadiqbal Post Smtp – Complete Email Deliverability And Solution With Logs, Alerts, Backup & Mobile App

CVE-2023-6629

The POST SMTP Mailer – Email log, Delivery Failure Notifications and Best Mail SMTP for WordPress plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the ‘msg’ parameter in all versions up to, and including, 2.8.6 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link. CVE-2023-6621 appears to be a duplicate of this issue. CVE-2024-29128 appears to be a duplicate of this issue.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.004 (37.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

Affected products

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

20142995/nuclei-templates

References

security@wordfence.com (Third Party Advisory)
security@wordfence.com (Issue Tracking)
security@wordfence.com (Patch)

Frequently asked questions

What is CVE-2023-6629?: CVE-2023-6629 is a medium-severity vulnerability in Saadiqbal Post Smtp – Complete Email Deliverability And Solution With Logs, Alerts, Backup & Mobile App, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2024-01-03.
How severe is CVE-2023-6629?: Medium severity. CVSS v3 base score is 6.1 out of 10.
Is CVE-2023-6629 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.