Vulnerability found that allows service exposure via a single POST request to React and Next.js servers!
A vulnerability was discovered that allows for service denial via a single POST request to React and Next.js servers!
A high-severity security vulnerability has been identified in the React Server Components (RSC) technology. This vulnerability, cataloged as CVE-2026-23870, could allow an attacker to overload the server by sending a specially crafted HTTP POST request. Consequently, the server may slow down or become temporarily unavailable, preventing users from accessing the website and services.
The severity of this vulnerability is rated at 7.5 out of 10 according to the CVSS 3.1 scoring system, classifying it as high-severity. This issue can affect certain web applications built using React Server Components technology, including those on the Next.js platform. React developers have released relevant security updates to mitigate this vulnerability.
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