CVE-2026-5542
Cross-Site Scripting in Simple Laundry System Parameter Handler
Publication date: 2026-04-05
Last updated on: 2026-04-29
Assigner: VulDB
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| code-projects | simple_laundry_system | 1.0 |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-79 | The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. |
| CWE-94 | The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
CVE-2026-5542 is a Cross-Site Scripting (XSS) vulnerability found in version 1.0 of the Simple Laundry System, specifically in the /modstaffinfo.php file. The vulnerability occurs because the application directly outputs the 'userid' parameter from user input into the web page without proper encoding or filtering.
This lack of input validation and output encoding allows attackers to inject malicious JavaScript code that executes in the victim's browser. The attack can be launched remotely and does not require authentication.
How can this vulnerability impact me? :
Exploitation of this vulnerability can lead to attackers executing arbitrary JavaScript in the context of the victim's browser. This can result in theft of sensitive information such as cookies and session tokens, unauthorized actions performed on behalf of the victim, defacement of web pages, redirection of users to malicious sites, and potentially gaining control over the victim’s browser.
Overall, this severely compromises user privacy and system security.
How can this vulnerability be detected on my network or system? Can you suggest some commands?
This vulnerability can be detected by testing the 'userid' parameter in the '/modstaffinfo.php' file for Cross-Site Scripting (XSS) by injecting a script payload and observing if it executes.
A proof-of-concept payload to test is: <script>prompt(/xss/);</script> which can be injected via the URL parameter like this:
- http://127.0.0.1/Laundry_system/modstaffinfo.php?userid=%3Cscript%3Eprompt(/xss/);%3C/script%3E
If the script executes (e.g., a prompt box appears), it confirms the presence of the XSS vulnerability.
What immediate steps should I take to mitigate this vulnerability?
Immediate remediation steps to mitigate this vulnerability include:
- Properly encode user inputs based on the context (HTML, JavaScript, CSS, URL) to ensure inputs are treated as text, not executable code.
- Enforce strict input validation and filtering to allow only expected formats and reject or escape potentially malicious content such as script tags and event handlers.
- Implement a strict Content Security Policy (CSP) to restrict script sources and prevent execution of unauthorized inline or external scripts.
- Set HttpOnly and Secure flags on sensitive cookies to prevent JavaScript access and ensure transmission only over HTTPS, mitigating cookie theft risks.
- Conduct regular security audits and code reviews to detect and remediate XSS and other vulnerabilities promptly.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
The Cross-Site Scripting (XSS) vulnerability in the Simple Laundry System allows attackers to execute malicious scripts in users' browsers, potentially leading to theft of sensitive information such as cookies and session tokens. This compromises user privacy and system security.
Such a vulnerability can negatively impact compliance with common standards and regulations like GDPR and HIPAA, which require protection of personal and sensitive data. Exploitation of this vulnerability could lead to unauthorized access or disclosure of user data, violating data protection requirements.
Therefore, failure to remediate this vulnerability may result in non-compliance with these regulations, exposing the organization to legal and financial penalties.