CVE-2025-5766: Simple Laundry System CSRF Vulnerability

CVE-2025-5766 Overview

CVE-2025-5766 is a cross-site request forgery (CSRF) vulnerability affecting code-projects Simple Laundry System 1.0. The flaw resides in an unspecified code path that fails to validate the origin or authenticity of state-changing HTTP requests. An attacker can craft a malicious web page or link that, when visited by an authenticated user, silently submits forged requests to the application. The exploit has been publicly disclosed, increasing the likelihood of opportunistic attacks against exposed installations. The vulnerability is classified under CWE-352: Cross-Site Request Forgery.

Critical Impact
Authenticated users can be tricked into performing unintended state-changing actions in the Laundry System, potentially modifying application data without their consent.

Affected Products

code-projects Simple Laundry System 1.0
CPE: cpe:2.3:a:code-projects:simple_laundry_system:1.0:*:*:*:*:*:*:*
Deployments exposing the application to browsers with authenticated user sessions

Discovery Timeline

2025-06-06 - CVE-2025-5766 published to NVD
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2025-5766

Vulnerability Analysis

The vulnerability stems from the absence of anti-CSRF protections in the Simple Laundry System web application. State-changing endpoints accept requests without verifying an unpredictable, session-bound token. As a result, the browser of an authenticated user automatically includes valid session cookies when a request originates from an attacker-controlled page. The server processes the forged request as legitimate. Because the attack occurs entirely through the victim's browser, exploitation requires no credential theft or direct network access to the target server.

Root Cause

The root cause is missing CSRF token validation on state-changing HTTP requests, consistent with CWE-352. The application relies solely on session cookies for request authorization. It does not verify the Origin or Referer headers, nor does it require a unique per-session token embedded in forms or AJAX requests.

Attack Vector

Exploitation requires user interaction. An attacker hosts a malicious page containing an auto-submitting HTML form or JavaScript that targets a sensitive endpoint in the Laundry System. When an authenticated administrator or user visits the page, the browser sends the forged request with valid session cookies. Public disclosure of the technique is documented in the GitHub CVE Issue #7 and VulDB entry #311308.

No verified proof-of-concept code is published in the referenced advisories beyond the general CSRF pattern described above.

Detection Methods for CVE-2025-5766

Indicators of Compromise

HTTP requests to Laundry System endpoints with Referer or Origin headers pointing to unrelated external domains
State-changing POST requests arriving without an associated GET request to the corresponding form page
Unexpected administrative actions performed during normal user browsing sessions

Detection Strategies

Inspect web server logs for cross-origin requests targeting sensitive endpoints such as user creation, record modification, or configuration changes
Compare the source IP and User-Agent patterns of state-changing requests against expected application workflows
Correlate authenticated session activity with browsing history to identify requests initiated from external sites

Monitoring Recommendations

Enable verbose HTTP request logging including Referer, Origin, and cookie session identifiers
Alert on high-frequency state-changing requests from a single session within short intervals
Review the VulDB advisory #311308 for updated indicators as they emerge

How to Mitigate CVE-2025-5766

Immediate Actions Required

Restrict access to the Simple Laundry System to trusted networks until a fix is applied
Instruct administrators to log out of the application when not actively using it, and to avoid browsing untrusted sites in the same browser session
Deploy a web application firewall (WAF) rule that blocks state-changing requests missing valid Origin or Referer headers

Patch Information

As of the last NVD update on 2026-06-17, no vendor patch is listed in the code-projects resource or associated advisories. Administrators should monitor the vendor site and the GitHub issue tracker for remediation guidance.

Workarounds

Implement a reverse proxy that injects and validates anti-CSRF tokens on all POST requests to the application
Configure session cookies with the SameSite=Strict attribute to prevent cross-site cookie transmission where the deployment permits
Restrict application access via IP allowlists or VPN to reduce exposure to browser-based cross-origin attacks
Consider migrating to a maintained laundry management platform if long-term vendor support is unavailable

bash

# Example nginx configuration enforcing SameSite cookies and Origin validation
location / {
    proxy_cookie_path / "/; SameSite=Strict; Secure; HttpOnly";
    if ($request_method = POST) {
        if ($http_origin !~* "^https://laundry\.internal\.example\.com$") {
            return 403;
        }
    }
    proxy_pass http://laundry_backend;
}