Recent reports highlight the exploitation of critical vulnerabilities within React Server Components, impacting both React and Next.js frameworks. These vulnerabilities, specifically identified as CVE-2025-55182 and CVE-2025-66478, pose significant risks to applications built using these popular web development tools.

The identified vulnerabilities are related to how React Server Components handle data, potentially allowing for various forms of attacks. Developers and organizations utilizing React and Next.js are urged to understand the nature of these exploits and take necessary precautions to secure their applications.

Understanding CVE-2025-55182 in React

CVE-2025-55182 targets fundamental aspects of React Server Components. This vulnerability can be leveraged to inject malicious code or manipulate server-side logic, leading to potential data breaches, unauthorized access, or complete system compromise. The exploitation pathway often involves carefully crafted input that bypasses security checks within the component rendering process.

Impact of CVE-2025-66478 on Next.js Applications

For Next.js users, CVE-2025-66478 presents a direct threat. This specific vulnerability builds upon the core React Server Component issues but also accounts for Next.js-specific implementations. Successful exploitation could result in remote code execution, allowing attackers to gain control over affected servers. The interconnected nature of React and Next.js means that issues in the foundational components can ripple through dependent frameworks, necessitating comprehensive security audits.

Organizations must implement immediate patching and mitigation strategies to protect their applications from these critical vulnerabilities. Staying informed about security advisories from React and Next.js development teams is crucial for maintaining a secure web environment.

Source: https://unit42.paloaltonetworks.com/cve-2025-55182-react-and-cve-2025-66478-next/