Executive Summary

CVE-2026-7108 is a Cross-Site Request Forgery (CSRF) vulnerability found in version 1.0 of the Invoice System built with Laravel. The issue occurs because the logout functionality is implemented as a GET request at the endpoint `/logout` without requiring a CSRF token.

This means an attacker can trick a user into visiting a malicious link or loading an image that triggers the logout URL, causing the user to be logged out without their consent.

The vulnerability arises from weak session handling and the lack of protection on a state-changing operation, which should normally require CSRF token validation.

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Impact Analysis

This vulnerability can impact you by allowing an attacker to forcibly log you out of the application without your consent.

Such forced logout interrupts availability and disrupts user experience, potentially causing inconvenience or denial of service for legitimate users.

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Detection Guidance

This vulnerability can be detected by checking if the logout functionality is implemented as a GET request at the endpoint `/logout` without requiring a CSRF token.

One way to detect exploitation attempts on your network is to monitor HTTP requests targeting the `/logout` endpoint using GET method.

• Use network monitoring tools like tcpdump or Wireshark to filter HTTP GET requests to `/logout`.
• Example tcpdump command: `tcpdump -A -s 0 'tcp port 80 and (((ip[2:2] - ((ip[0]&0xf)<<2)) - ((tcp[12]&0xf0)>>2)) != 0)' | grep 'GET /logout'`
• Check web server logs (e.g., Apache or Nginx access logs) for GET requests to `/logout` that do not include CSRF tokens.

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Mitigation Strategies

Immediate mitigation steps include changing the logout route to use the POST method instead of GET.

Enforce CSRF token validation on logout requests to ensure that only legitimate requests can trigger logout.

Explicitly invalidate the session in the logout controller by calling `Session::flush()` and `Auth::logout()` to properly terminate user sessions.

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Compliance Impact

The vulnerability CVE-2026-7108 is a Cross-Site Request Forgery (CSRF) issue in the logout functionality of the Invoice System built with Laravel. This flaw allows attackers to forcibly log out users without their consent, causing session termination and disruption of user experience.

While the provided information does not explicitly mention compliance with standards such as GDPR or HIPAA, the vulnerability could indirectly impact compliance by undermining session integrity and user control over their sessions. For example, forced logout attacks may disrupt availability and user access, which could affect service reliability requirements under such regulations.

However, since there is no direct information linking this vulnerability to data breaches, unauthorized data access, or exposure of personal data, the impact on compliance with data protection regulations like GDPR or HIPAA cannot be conclusively determined from the provided text.

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