CVE-2023-6629: XSS
First published: Wed Jan 03 2024(Updated: )
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.
Credit: security@wordfence.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Wpexperts Post SMTP | <2.8.7 |
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Reference Links
- https://www.wordfence.com/threat-intel/vulnerabilities/id/7681f984-d488-4da7-afe1-988e5ad012f2?source=cve
- https://plugins.trac.wordpress.org/browser/post-smtp/trunk/Postman/Wizard/NewWizard.php#L396
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=3012318%40post-smtp%2Ftrunk&old=3006604%40post-smtp%2Ftrunk&sfp_email=&sfph_mail=#file4
Frequently Asked Questions
What is the severity of CVE-2023-6629?
CVE-2023-6629 has a moderate severity level due to the possibility of reflected cross-site scripting attacks.
How do I fix CVE-2023-6629?
To fix CVE-2023-6629, update the POST SMTP Mailer plugin to version 2.8.7 or later.
What causes the vulnerability CVE-2023-6629?
CVE-2023-6629 is caused by insufficient input sanitization and output escaping in the 'msg' parameter.
What types of attacks are possible with CVE-2023-6629?
CVE-2023-6629 allows attackers to execute reflected cross-site scripting attacks, potentially affecting users' sessions.
Which versions of the plugin are affected by CVE-2023-6629?
All versions of the POST SMTP Mailer plugin up to and including 2.8.6 are affected by CVE-2023-6629.
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