CVE-2026-30556

Name: CVE-2026-30556
Creator: NVD / NIST
Published: 2026-03-30T16:16:05.203+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.1/10EPSS 0.25%

Last modified Jun 17, 2026

CVE-2026-30556 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. 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. EPSS estimates a 0.25% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

6.1/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS Probability

0.25%

16.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Ahsanriaz26gmailcom	Sales And Inventory System	1.0

References

https://github.com/meifukun/Web-Security-PoCs/blob/main/Inventory-System/XSS-Index-msg.mdExploit, Third Party Advisory
https://github.com/meifukun/Web-Security-PoCs/blob/main/Inventory-System/XSS-Index-msg.mdExploit, Third Party Advisory

Timeline

Published: Mar 30, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-30556?

How severe is CVE-2026-30556?

CVE-2026-30556 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 0.25% probability of exploitation in the next 30 days.

How do I fix CVE-2026-30556?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-30556?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST