CVE-2026-30556
SourceCodester Sales and Inventory System Reflected Cross-Site Scripting (XSS)
Description
A Reflected Cross-Site Scripting (XSS) vulnerability exists in SourceCodester Sales and Inventory System 1.0. The vulnerability is located in the index.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.
INFO
Published Date :
March 30, 2026, 4:16 p.m.
Last Modified :
April 1, 2026, 3:42 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
Affected Products
The following products are affected by CVE-2026-30556
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
Solution
- Sanitize all user-supplied input.
- Validate and filter input for dangerous characters.
- Implement output encoding for dynamic content.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-30556.
| URL | Resource |
|---|---|
| https://github.com/meifukun/Web-Security-PoCs/blob/main/Inventory-System/XSS-Index-msg.md | Exploit Third Party Advisory |
| https://github.com/meifukun/Web-Security-PoCs/blob/main/Inventory-System/XSS-Index-msg.md | Exploit Third Party Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-30556 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-30556
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-30556 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-30556 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Apr. 01, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:ahsanriaz26gmailcom:sales_and_inventory_system:1.0:*:*:*:*:*:*:* Added Reference Type CISA-ADP: https://github.com/meifukun/Web-Security-PoCs/blob/main/Inventory-System/XSS-Index-msg.md Types: Exploit, Third Party Advisory Added Reference Type MITRE: https://github.com/meifukun/Web-Security-PoCs/blob/main/Inventory-System/XSS-Index-msg.md Types: Exploit, Third Party Advisory -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Mar. 31, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Added CWE CWE-79 Added Reference https://github.com/meifukun/Web-Security-PoCs/blob/main/Inventory-System/XSS-Index-msg.md -
New CVE Received by [email protected]
Mar. 30, 2026
Action Type Old Value New Value Added Description A Reflected Cross-Site Scripting (XSS) vulnerability exists in SourceCodester Sales and Inventory System 1.0. The vulnerability is located in the index.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. Added Reference https://github.com/meifukun/Web-Security-PoCs/blob/main/Inventory-System/XSS-Index-msg.md