Meta react-server-dom-webpack up to 19.0.1/19.1.2/19.2.1 React Server deserialization

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
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CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.3$0-$5k0.00

Summaryinfo

A vulnerability was found in Meta react-server-dom-webpack, react-server-dom-turbopack and react-server-dom-parcel up to 19.0.1/19.1.2/19.2.1. It has been rated as problematic. The affected element is an unknown function of the component React Server Component. Performing a manipulation results in deserialization. This vulnerability is cataloged as CVE-2025-55183. It is possible to initiate the attack remotely. There is no exploit available.

Detailsinfo

A vulnerability classified as problematic has been found in Meta react-server-dom-webpack, react-server-dom-turbopack and react-server-dom-parcel up to 19.0.1/19.1.2/19.2.1. This affects an unknown function of the component React Server Component. The manipulation with an unknown input leads to a deserialization vulnerability. CWE is classifying the issue as CWE-502. The product deserializes untrusted data without sufficiently verifying that the resulting data will be valid. This is going to have an impact on confidentiality. The summary by CVE is:

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.

It is possible to read the advisory at facebook.com. This vulnerability is uniquely identified as CVE-2025-55183 since 08/08/2025. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 12/13/2025).

The vulnerability scanner Nessus provides a plugin with the ID 278531 (Node.js React Server Components Denial of Service and Source Code Exposure (CVE-2025-55183, CVE-2025-55184)), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at Tenable (278531) and CERT Bund (WID-SEC-2025-2835). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Affected

  • Vercel Next.js
  • Open Source React

Productinfo

Type

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.3
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 5.3
CNA Vector (Meta): 🔒

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Deserialization
CWE: CWE-502 / CWE-20
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 278531
Nessus Name: Node.js React Server Components Denial of Service and Source Code Exposure (CVE-2025-55183, CVE-2025-55184)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

08/08/2025 CVE reserved
12/11/2025 +125 days VulDB entry created
12/12/2025 +0 days Advisory disclosed
12/13/2025 +1 days VulDB entry last update

Sourcesinfo

Advisory: facebook.com
Status: Confirmed

CVE: CVE-2025-55183 (🔒)
GCVE (CVE): GCVE-0-2025-55183
GCVE (VulDB): GCVE-100-335979
CERT Bund: WID-SEC-2025-2835 - Vercel Next.js und React Server Components: Mehrere Schwachstellen

Entryinfo

Created: 12/12/2025 00:07
Updated: 12/13/2025 17:17
Changes: 12/12/2025 00:07 (62), 12/12/2025 15:11 (7), 12/13/2025 17:17 (2)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Discussion

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