CVE-2015-20121 RealtyScript 4.0.2 SQL Injection via u_id and agent Parameters
Unauthenticated attackers can inject SQL via parameters to extract database information or cause denial of service in RealtyScript.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2015-20121?
CVE-2015-20121 is a high-severity SQL injection vulnerability in Next Click Ventures RealtyScripts, published on 15 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Next Click Ventures RealtyScript 4.0.2 contains SQL injection vulnerabilities that allow unauthenticated attackers to manipulate database queries by injecting arbitrary SQL code through the GET parameter 'u_id' in /admin/users.php and the POST parameter 'agent[]' in /admin/mailer.php. Attackers can exploit time-based blind SQL injection techniques to extract sensitive database information or cause denial of service through sleep-based payloads.
Weakness: CWE-89
Which versions are affected by CVE-2015-20121?
It affects 1 product.
Products include Nextclickventures Realtyscript.
How do I fix CVE-2015-20121?
No fix has been published for CVE-2015-20121 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-2015-20121 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2015-20121 exists.
Other vulnerabilities in Next Click Ventures RealtyScripts
- CVE-2015-20120 RealtyScript 4.0.2 Multiple Time-based Blind SQL Injection
- CVE-2015-20113 RealtyScript 4.0.2 Multiple Cross-Site Request Forgery and Persistent Cross-Site Scripting Vulnerabilities
- CVE-2015-20117 RealtyScript 4.0.2 Cross-Site Request Forgery Unauthorized User Creation
- CVE-2015-20114 RealtyScript 4.0.2 Cross-Site Scripting via Multiple Parameters
- CVE-2015-20115 RealtyScript 4.0.2 Stored Cross-Site Scripting via File Upload Parameter
Sources
Also known as GHSA-hgf7-23m8-77fh.