CVE-2023-6620 Post SMTP < 2.8.7 - Admin+ SQL Injection
Admin users can exploit SQL injection in the POST SMTP Mailer plugin to read or modify database contents.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2023-6620?
CVE-2023-6620 is a high-severity SQL injection vulnerability in Unknown POST SMTP Mailer, published on 15 Jan 2024. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
The POST SMTP Mailer WordPress plugin before 2.8.7 does not properly sanitise and escape several parameters before using them in SQL statements, leading to a SQL injection exploitable by high privilege users such as admin.
Weakness: CWE-89
Which versions are affected by CVE-2023-6620?
It affects 1 product.
Products include Wpexperts Post Smtp.
How do I fix CVE-2023-6620?
No fix has been published for CVE-2023-6620 yet. Limit exposure of the affected software until one is available.
Use parameterised queries everywhere and never build SQL by joining strings. Upgrade affected software first; a web application firewall only buys time. More about SQL injection.
Is CVE-2023-6620 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-6620 exists.
Other vulnerabilities in Unknown POST SMTP Mailer
- CVE-2023-6875 Auth bypass in Post SMTP – Complete Email Deliverability and SMTP Solution with Email Logs, Alerts, Backup SMTP & Mobile App
- CVE-2023-3179 POST SMTP Mailer < 2.5.7 - Account Takeover via CSRF
- CVE-2023-52233 WordPress POST SMTP Mailer plugin <= 2.8.6 - Broken Access Control on API vulnerability
- CVE-2024-52436 WordPress Post SMTP plugin <= 2.9.9 - SQL Injection vulnerability
- CVE-2025-0521 Post SMTP <= 3.0.2 - Unauthenticated Stored Cross-Site Scripting
Sources
Also known as CVE-2024-0694, GHSA-4xvm-vc4w-9h2j.