CVE-2026-4849
Cross-Site Scripting in Simple Laundry System /modify.php Parameter Handler
Publication date: 2026-03-26
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
How can this vulnerability impact me? :
This vulnerability can have several significant impacts:
- Attackers can steal cookies, session tokens, or other sensitive information.
- Perform unauthorized actions on behalf of the victim.
- Deface web pages or redirect users to malicious sites.
- Potentially gain control over the victim’s browser.
Can you explain this vulnerability to me?
CVE-2026-4849 is a Cross-Site Scripting (XSS) vulnerability found in version 1.0 of the Simple Laundry System project, specifically in the /modify.php file.
The vulnerability occurs because the application directly outputs user input from the firstName parameter to the web page without proper encoding or filtering.
This lack of input validation and output encoding allows attackers to inject malicious JavaScript code, which executes in the victim's browser.
No authentication or authorization is required to exploit this vulnerability.
How can this vulnerability be detected on my network or system? Can you suggest some commands?
This vulnerability can be detected by testing the /modify.php endpoint of the Simple Laundry System 1.0 for Cross-Site Scripting (XSS) in the firstName parameter.
A common detection method is to inject a test payload such as <script>prompt(/xss/);</script> into the firstName parameter and observe if the script executes in the browser.
You can use tools like curl or browser developer tools to send requests and check responses.
- Example curl command to test the vulnerability: curl -G 'http://target-site/modify.php' --data-urlencode 'firstName=<script>prompt(/xss/);</script>'
- Use a web proxy or intercepting proxy (e.g., Burp Suite) to inject the payload and observe if the script executes.
What immediate steps should I take to mitigate this vulnerability?
Immediate mitigation steps include:
- Implement proper output encoding for user inputs when rendering them on web pages, using context-appropriate encoding methods (HTML, JavaScript, CSS, URL).
- Enforce strict input validation and filtering on the firstName parameter to allow only expected formats and reject or escape potentially malicious content such as script tags.
- 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.
- Conduct regular security audits and code reviews to detect and fix 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 steal sensitive information such as cookies and session tokens, perform unauthorized actions, and potentially gain control over users' browsers. This exposure of sensitive data and unauthorized access can lead to violations of data protection regulations like GDPR and HIPAA, which require safeguarding personal and sensitive information against unauthorized access and breaches.
Failure to remediate this vulnerability could result in non-compliance with these standards due to inadequate protection of user data, potentially leading to legal and financial consequences.
Recommended mitigations such as proper output encoding, input validation, Content Security Policy implementation, and secure cookie flags help align the system with compliance requirements by reducing the risk of data breaches.