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.

The Next.js Framework on the remote host is affected by a source code exposure vulnerability:

  - 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. (CVE-2025-55183)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by multiple vulnerabilities as referenced in the 7a1bd1ca-cf40-41e2-9c5f-143a0d4b17af advisory.

    https://nextjs.org/blog/security-update-2025-12-11 reports:
    A specifically crafted HTTP request can cause a Server Function to               return the compiled source code of other Server Functions in your               application. This could reveal business logic. Secrets could also be exposed               if they are defined directly in your code (rather than accessed via environment               variables at runtime) and referenced within a Server Function.
              Depending on your bundler configuration, these values may be inlined into the               compiled function output.
    A specifically crafted HTTP request can be sent to any App Router endpoint               that, when deserialized, can cause an infinite loop that hangs the server               process and prevents future HTTP requests from being served.

Tenable has extracted the preceding description block directly from the FreeBSD security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - 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. (CVE-2025-55183)

Multiple Node.js React Server Components packages are affected by denial of service and source code exposure vulnerabilities. The following Node.js packages and versions are affected:

  - react-server-dom-webpack 19.0.0, 19.0.1, 19.1.0, 19.1.1, 19.1.2, 19.2.0, 19.2.1
  - react-server-dom-parcel 19.0.0, 19.0.1, 19.1.0, 19.1.1, 19.1.2, 19.2.0, 19.2.1
  - react-server-dom-turbopack 19.0.0, 19.0.1, 19.1.0, 19.1.1, 19.1.2, 19.2.0, 19.2.1

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Severity
279413	Next.js Framework React Server Components Source Code Exposure (CVE-2025-55183)	Nessus	Misc.	medium
278623	FreeBSD : github-release-monitor -- multiple vulnerabilities (7a1bd1ca-cf40-41e2-9c5f-143a0d4b17af)	Nessus	FreeBSD Local Security Checks	medium
436361	SCA: security update for react-server-dom-parcel, react-server-dom-turbopack, react-server-dom-webpack (GHSA-925w-6v3x-g4j4)	Tenable Cloud Security	SCA Checks	medium
436361	SCA: security update for react-server-dom-parcel, react-server-dom-turbopack, react-server-dom-webpack (GHSA-925w-6v3x-g4j4)	Tenable Self-Hosted Container Security	SCA Checks	medium
278531	Node.js React Server Components Denial of Service and Source Code Exposure (CVE-2025-55183, CVE-2025-55184)	Nessus	Misc.	medium

Detections

Analytics

CVE-2025-55183

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Tenable Plugins

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