Summaryinfo

A vulnerability categorized as problematic has been discovered in SourceCodester Sales and Inventory System 1.0. This affects an unknown function of the file add_customer.php of the component Parameter Handler. Executing a manipulation of the argument msg can lead to cross site scripting. This vulnerability appears as CVE-2026-30558. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability has been found in SourceCodester Sales and Inventory System 1.0 and classified as problematic. This vulnerability affects an unknown functionality of the file add_customer.php of the component Parameter Handler. The manipulation of the argument msg with an unknown input leads to a cross site scripting vulnerability. The CWE definition for the vulnerability is CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. As an impact it is known to affect integrity. CVE summarizes:

A Reflected Cross-Site Scripting (XSS) vulnerability exists in SourceCodester Sales and Inventory System 1.0. The vulnerability is located in the add_customer.php file via the "msg" parameter. The application fails to sanitize the input, allowing remote attackers to inject arbitrary web script or HTML via a crafted URL.

The advisory is shared for download at github.com. This vulnerability was named CVE-2026-30558 since 03/04/2026. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1059.007.

By approaching the search of inurl:add_customer.php it is possible to find vulnerable targets with Google Hacking.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

• SourceCodester

Name

• Sales and Inventory System

Version

• 1.0

License

• free

Website

• Vendor: https://www.sourcecodester.com/

CPE 2.3info

• 🔒

CPE 2.2info

• 🔒

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

Discussion