vitejs vite-plugin-react up to 0.5.5 loadserverAction/decodeReply/decodeAction code injection

Summaryinfo

A vulnerability was found in vitejs vite-plugin-react up to 0.5.5. It has been declared as critical. Impacted is the function loadserverAction/decodeReply/decodeAction. Such manipulation leads to code injection. This vulnerability is documented as CVE-2025-67489. The attack can be executed remotely. There is not any exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in vitejs vite-plugin-react up to 0.5.5 and classified as critical. Affected by this issue is the function loadserverAction/decodeReply/decodeAction. The manipulation with an unknown input leads to a code injection vulnerability. Using CWE to declare the problem leads to 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. Impacted is confidentiality, integrity, and availability. CVE summarizes:

@vitejs/plugin-rs provides React Server Components (RSC) support for Vite. Versions 0.5.5 and below are vulnerable to arbitrary remote code execution on the development server through unsafe dynamic imports in server function APIs (loadServerAction, decodeReply, decodeAction) when integrated into RSC applications that expose server function endpoints. Attackers with network access to the development server can read/modify files, exfiltrate sensitive data (source code, environment variables, credentials), or pivot to other internal services. While this affects development servers only, the risk increases when using vite --host to expose the server on all network interfaces. This issue is fixed in version 0.5.6.

The advisory is shared for download at github.com. This vulnerability is handled as CVE-2025-67489 since 12/08/2025. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1059.

Upgrading to version 0.5.6 eliminates this vulnerability. Applying the patch fe634b58210d0a4a146a7faae56cd71af3bb9af4 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• JavaScript Library

Vendor

• vitejs

Name

• vite-plugin-react

Version

• 0.5.0
• 0.5.1
• 0.5.2
• 0.5.3
• 0.5.4
• 0.5.5

License

• open-source

Website

• Product: https://github.com/vitejs/vite-plugin-react/

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Once again VulDB remains the best source for vulnerability data.

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