Is there a public PoC exploit available for CVE-2026-16229?

Yes, a public proof-of-concept exploit is available for CVE-2026-16229. Prioritise patching immediately. EPSS: 0.4%.

Courier Management System CVE-2026-16229

Q: What is the CVSS score of CVE-2026-16229?

CVE-2026-16229 has a CVSS 4.0 base score of 2.1 (Low). CVSS vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X. EPSS exploitation probability: 0.4%.

EUVD-2026-45445 LOW

Cross-site Scripting (XSS) (CWE-79)

2026-07-19 VulDB

GHSA-99rp-hq8h-747m

PHP XSS Courier Management System Itsourcecode

2.1

CVSS 4.0 · Vendor: VulDB

Severity by source

Vendor (VulDB) PRIMARY

2.1 MEDIUM

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

vuln.today AI

6.1 MEDIUM

Reflected XSS mandates user interaction (UI:R) and a scope change (S:C) since injected scripts run in the victim's browser origin, with low C and I impact.

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

4.0 AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:L/SI:L/SA:N

Primary rating from Vendor (VulDB).

CVSS VectorVendor: VulDB

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Scope

Lifecycle Timeline

Severity Changed

Jul 19, 2026 - 10:22 NVD

MEDIUM LOW

CVSS changed

Jul 19, 2026 - 10:22 NVD

5.3 (MEDIUM) 2.1 (LOW)

Analysis Generated

Jul 19, 2026 - 10:21 vuln.today

CVE Published

Jul 19, 2026 - 09:45 cve.org

MEDIUM 5.3

DescriptionCVE.org

A flaw has been found in itsourcecode Courier Management System up to 1.0. Affected by this vulnerability is an unknown functionality of the file /index.php. Executing a manipulation of the argument page can lead to cross site scripting. It is possible to launch the attack remotely. The exploit has been published and may be used.

AnalysisAI

Cross-site scripting in itsourcecode Courier Management System 1.0 allows remote, unauthenticated attackers to inject arbitrary client-side scripts via the page parameter of /index.php, requiring only that a victim user follow a crafted link. A publicly available proof-of-concept exploit exists, lowering the bar for abuse. No patch has been identified at time of analysis; no CISA KEV listing, but the public PoC and low attack complexity make this actionable for defenders protecting user sessions.

Technical ContextAI

The affected product is a PHP-based web application for managing courier and logistics operations, developed by itsourcecode and identified by CPE cpe:2.3:a:itsourcecode:courier_management_system:*:*:*:*:*:*:*:*. The root cause is CWE-79 (Improper Neutralization of Input During Web Page Generation), meaning the page URL parameter received by /index.php is reflected into the HTML response without proper sanitization or context-aware output encoding. This class of flaw allows attacker-supplied JavaScript to execute in the browser of any user who loads the crafted URL, within the security context of the application's origin.

RemediationAI

No vendor-released patch has been identified at time of analysis - the itsourcecode project site (https://itsourcecode.com/) should be monitored for updates, and the VulDB entry at https://vuldb.com/vuln/380051 should be tracked for patch status changes. As an immediate compensating control, apply strict server-side input validation and context-aware HTML output encoding (e.g., htmlspecialchars() in PHP) to the page parameter in /index.php before it is reflected into any HTML response; this prevents injection while preserving functionality. Deploying a WAF rule targeting XSS patterns in the page parameter (e.g., ModSecurity CRS) reduces exposure but is bypassable and should not be treated as a substitute for code-level remediation. Restricting application access to internal networks or authenticated users via network-layer controls would eliminate the unauthenticated remote attack vector entirely, with the trade-off of reduced external accessibility.