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PHP CVE-2026-5539

| EUVDEUVD-2026-19026 LOW
Cross-site Scripting (XSS) (CWE-79)
2026-04-05 VulDB GHSA-rgqr-jrx3-5xwx
2.1
CVSS 4.0 · Vendor: VulDB

Severity by source

Vendor (VulDB) PRIMARY
2.1 LOW
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

Primary rating from Vendor (VulDB) · only source for this CVE.

CVSS VectorVendor: VulDB

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
P
Scope
X

Lifecycle Timeline

6
Severity Changed
Apr 29, 2026 - 01:11 NVD
MEDIUM LOW
CVSS changed
Apr 29, 2026 - 01:11 NVD
5.3 (MEDIUM) 2.1 (LOW)
PoC Detected
Apr 07, 2026 - 13:20 vuln.today
Public exploit code
EUVD ID Assigned
Apr 05, 2026 - 04:00 euvd
EUVD-2026-19026
Analysis Generated
Apr 05, 2026 - 04:00 vuln.today
CVE Published
Apr 05, 2026 - 03:30 nvd
MEDIUM 5.3

DescriptionCVE.org

A flaw has been found in code-projects Simple Laundry System 1.0. This affects an unknown part of the file /modifymember.php of the component Parameter Handler. This manipulation of the argument firstName causes cross site scripting. The attack can be initiated remotely. The exploit has been published and may be used.

AnalysisAI

Stored cross-site scripting (XSS) in code-projects Simple Laundry System 1.0 allows unauthenticated remote attackers to inject malicious scripts via the firstName parameter in /modifymember.php, which are executed in the context of other users' browsers. The vulnerability has a CVSS score of 4.3 with low impact severity but publicly available exploit code, though exploitation requires user interaction (UI:R). This represents a typical reflected or stored XSS in a parameter handler with limited immediate risk due to no confidentiality or availability impact, though it enables session hijacking and credential theft.

Technical ContextAI

The vulnerability resides in a PHP-based parameter handler for the /modifymember.php endpoint in Simple Laundry System, a web application for managing laundry operations. The flaw is classified as CWE-79 (Improper Neutralization of Input During Web Page Generation, also known as Cross-Site Scripting), indicating that user-supplied input (the firstName parameter) is not properly sanitized or encoded before being reflected or stored in HTML output. The absence of input validation or output encoding on the firstName field allows attackers to inject arbitrary JavaScript code that executes in victims' browsers when they visit a malicious link or when the application renders stored user data. The CPE identifier cpe:2.3:a:code-projects:simple_laundry_system:*:*:*:*:*:*:*:* indicates all versions up to and including 1.0 are affected.

RemediationAI

Organizations using Simple Laundry System should immediately upgrade to a patched version released by code-projects. Input validation and output encoding must be applied to the firstName parameter in /modifymember.php: all user inputs should be validated against an allowlist of permitted characters, and all output rendered in HTML context should be properly HTML-encoded (e.g., converting '<' to '&lt;', '>' to '&gt;', and quotes to their HTML entities). As a temporary workaround pending patches, disable or restrict access to the /modifymember.php endpoint using web server configuration, or implement a Web Application Firewall (WAF) rule to filter XSS payloads in the firstName parameter. For immediate guidance, consult the vendor advisory at https://code-projects.org/ and the VulDB entry at https://vuldb.com/vuln/355292.

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CVE-2026-5539 vulnerability details – vuln.today

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