EUVD-2025-201824

Comprehensive Technical Analysis of EUVD-2025-201824

1. Vulnerability Assessment and Severity Evaluation

The vulnerability identified in @vitejs/plugin-rs versions 0.5.5 and below allows for arbitrary remote code execution (RCE) on the development server. This is due to unsafe dynamic imports in server function APIs (loadServerAction, decodeReply, decodeAction) when integrated into React Server Components (RSC) applications that expose server function endpoints.

Severity Evaluation:

• CVSS Base Score: 9.8
• CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

The high CVSS score indicates a critical vulnerability. The attack vector is network-based (AV:N), requires low complexity (AC:L), no privileges (PR:N), and no user interaction (UI:N). The impact on confidentiality, integrity, and availability is high (C:H/I:H/A:H).

2. Potential Attack Vectors and Exploitation Methods

Attack Vectors:

1. Network Access to Development Server: Attackers with network access to the development server can exploit the vulnerability.
2. Exposed Server Endpoints: Applications that expose server function endpoints are particularly at risk.
3. Unsafe Dynamic Imports: The vulnerability stems from unsafe dynamic imports in server function APIs.

Exploitation Methods:

1. Remote Code Execution: Attackers can execute arbitrary code on the development server.
2. File Manipulation: Attackers can read, modify, or delete files on the server.
3. Data Exfiltration: Sensitive data such as source code, environment variables, and credentials can be exfiltrated.
4. Pivoting: Attackers can use the compromised server as a pivot point to attack other internal services.

3. Affected Systems and Software Versions

Affected Software:

• @vitejs/plugin-rs versions 0.5.5 and below.

Affected Systems:

• Development servers running the affected versions of @vitejs/plugin-rs.
• Systems where the development server is exposed to all network interfaces using vite --host.

4. Recommended Mitigation Strategies

1. Upgrade to Safe Version: Upgrade @vitejs/plugin-rs to version 0.5.6 or later, which includes the fix for this vulnerability.
2. Restrict Network Access: Ensure that the development server is not exposed to untrusted networks. Use firewalls and network segmentation to limit access.
3. Monitor and Audit: Implement continuous monitoring and auditing of development servers to detect and respond to any suspicious activities.
4. Code Review: Conduct thorough code reviews and security audits to identify and mitigate similar vulnerabilities in other parts of the codebase.
5. Security Best Practices: Follow best practices for securing development environments, including using secure coding practices and regularly updating dependencies.

5. Impact on European Cybersecurity Landscape

The vulnerability poses a significant risk to organizations using @vitejs/plugin-rs for development purposes, particularly those in the European Union. The potential for data exfiltration and pivoting to other internal services can lead to severe breaches, impacting data privacy and compliance with regulations such as GDPR. Organizations must prioritize patching and securing their development environments to mitigate these risks.

6. Technical Details for Security Professionals

Vulnerability Details:

• Vulnerable APIs: loadServerAction, decodeReply, decodeAction
• Exploitation Mechanism: Unsafe dynamic imports in these APIs allow for arbitrary code execution.
• Exposure: The risk is heightened when the development server is exposed to all network interfaces using vite --host.

References:

• GitHub Advisory: GHSA-j76j-5p5g-9wfr
• Fix Commit: fe634b58210d0a4a146a7faae56cd71af3bb9af4
• NVD Entry: CVE-2025-67489

Assigner: GitHub_M

ENISA IDs:

• Product: vite-plugin-react versions < 0.5.6
• Vendor: vitejs

Conclusion: This vulnerability underscores the importance of securing development environments and regularly updating dependencies. Organizations should prioritize upgrading to the patched version and implementing robust security measures to protect against similar threats.