CVE-2026-11518: SourceCodester Inventory System User Management users.php cross site scripting
A vulnerability was identified in SourceCodester Inventory System 1.0. Affected is an unknown function of the file /users.php of the component User Management Page. The manipulation of the argument fullname/username leads to cross site scripting. The attack is possible to be carried out remotely. The exploit is publicly available and might be used.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Remove
Remove
SourceCodester Inventory System 1.0 - User Management (users.php)from your environment.If the User Management page is not required, disable or remove the users.php page/component to eliminate the vulnerable functionality.
- Configuration
Implement server-side validation to reject or sanitize script tags and dangerous payloads in the fullname and username fields, and apply proper HTML output encoding/escaping when rendering these values in users.php to prevent reflected/stored XSS.
SourceCodester Inventory System 1.0 - User Management (users.php) fullname/username input handling = server-side input validation and output encoding - Compensating control
Restrict access to the User Management page (users.php) to trusted IP addresses or an internal network and/or deploy a web application firewall (WAF) to detect and block XSS payloads until application code is fixed.
- Operational
Search application and webserver logs for attempts to exploit users.php (fullname/username fields), remove or sanitize any stored malicious input in the database, and remediate any records containing injected scripts.
Event History
Frequently Asked Questions
What is the severity of CVE-2026-11518?
The severity of CVE-2026-11518 is medium with a score of 4.3.
How do I fix CVE-2026-11518?
To fix CVE-2026-11518, validate and sanitize user input on the fullname/username parameters in the users.php file to prevent cross site scripting.
What type of vulnerability is CVE-2026-11518?
CVE-2026-11518 is a cross site scripting (XSS) vulnerability.
Can CVE-2026-11518 be exploited remotely?
Yes, CVE-2026-11518 can be exploited remotely due to the nature of the vulnerability.
Which component is affected by CVE-2026-11518?
CVE-2026-11518 affects the User Management Page of the SourceCodester Inventory System.