CVE-2016-20063 Single Personal Message 1.0.3 WordPress Plugin SQL Injection
Authenticated attackers can inject SQL via the message parameter to extract sensitive database information from the Single Personal Message WordPress plugin.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2016-20063?
CVE-2016-20063 is a high-severity SQL injection vulnerability in Md. Shamim Shahnewaz Single Personal Message, published on 9 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Single Personal Message 1.0.3 contains an SQL injection vulnerability that allows authenticated users to execute arbitrary SQL queries by injecting malicious code through the message parameter. Attackers can access the admin interface and supply crafted SQL statements in the message parameter to extract sensitive database information including user credentials and site configuration data.
Weakness: CWE-89
Which versions are affected by CVE-2016-20063?
How do I fix CVE-2016-20063?
No fix has been published for CVE-2016-20063 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-2016-20063 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2016-20063 exists.
Sources
Also known as GHSA-w9r3-v9m2-5vxp.