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    CVE-2025-55183

    An information leak vulnerability exists in specific configurations of React Server Components versions 19.0.0, 19.0.1 19.1.0, 19.1.1, 19.1.2, 19.2.0 and 19.2.1, including the following packages: react-server-dom-parcel, react-server-dom-turbopack, and react-server-dom-webpack. A specifically crafted HTTP request sent to a vulnerable Server Function may unsafely return the source code of any Server Function. Exploitation requires the existence of a Server Function which explicitly or implicitly exposes a stringified argument.

    Published:Dec 11, 2025
    Last Modified:Jan 7, 2026
    EPS:Dec 11, 2025
    EPSS Score:0.12469
    CVSS Score:5.3

    Affected Products

    Vendor
    Facebook
    Product
    React
    Vendor
    Facebook
    Product
    React-server-dom-parcel
    Vendor
    Facebook
    Product
    React-server-dom-turbopack
    Vendor
    Facebook
    Product
    React-server-dom-webpack
    Vendor
    Vercel
    Product
    Next.js

    Exploits

    https://react.dev/blog/2025/12/11/denial-of-service-and-source-code-exposure-in-react-server-componentshttps://github.com/kimtruth/CVE-2025-55183-pochttps://github.com/omaidnebari/RSC-Scanner-POChttps://github.com/Saturate/CVE-2025-55183https://github.com/StealthMoud/react-server-cve-labhttps://github.com/williavs/nextjs-security-updatehttps://github.com/X-Cotang/CVE-2025-55183_POC

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-170 Web Application Fingerprinting
    CAPEC-694 System Location Discovery

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High