CVE-2026-9413: SourceCodester Indian Invoicing System category.php cross site scripting
A vulnerability was identified in SourceCodester Indian Invoicing System 1.0. The affected element is an unknown function of the file /Invoicing/category.php. The manipulation of the argument msg leads to cross site scripting. The attack may be initiated 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 Indian Invoicing System 1.0from your environment.If the application is not required, uninstall or take the application offline until the vulnerability is remediated.
- Configuration
In /Invoicing/category.php stop echoing the raw 'msg' argument. Implement server-side input validation for the 'msg' parameter and HTML-encode/escape any user-controlled data before rendering in the page to prevent XSS.
SourceCodester Indian Invoicing System 1.0 msg parameter handling = server-side validation and HTML-escape output - Compensating control
Deploy a Web Application Firewall (WAF) rule or input-filtering proxy to block common XSS payloads targeting the 'msg' parameter, and/or restrict access to the application (e.g., by IP allowlist) until the code is fixed.
- Operational
Monitor web and application logs for requests targeting /Invoicing/category.php and the 'msg' parameter for signs of exploitation (public exploit available). If exploitation is detected, investigate impacted accounts/sessions and, if compromise is suspected, invalidate affected sessions and perform appropriate incident response actions (e.g., password resets, further forensics).
Event History
Frequently Asked Questions
What is the severity of CVE-2026-9413?
The severity of CVE-2026-9413 is classified as medium with a CVSS score of 4.3.
How do I fix CVE-2026-9413?
To fix CVE-2026-9413, ensure that user input is properly sanitized and validated in the category.php file.
What type of vulnerability is CVE-2026-9413?
CVE-2026-9413 is a cross-site scripting (XSS) vulnerability.
Can CVE-2026-9413 be exploited remotely?
Yes, CVE-2026-9413 can be exploited remotely by manipulating the msg argument.
What is the affected software for CVE-2026-9413?
The affected software for CVE-2026-9413 is the SourceCodester Indian Invoicing System version 1.0.