Meta react-server-dom-webpack 19.0.0/19.1.0/19.1.1/19.2.0 React Server React2Shell deserialization

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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8.6$0-$5k2.34

Summaryinfo

A vulnerability was found in Meta react-server-dom-webpack, react-server-dom-turbopack and react-server-dom-parcel 19.0.0/19.1.0/19.1.1/19.2.0. It has been declared as very critical. This vulnerability affects unknown code of the component React Server. Such manipulation leads to deserialization. This vulnerability is uniquely identified as CVE-2025-55182. The attack can be launched remotely. Moreover, an exploit is present. This vulnerability is historically impactful due to its background and the reception it garnered.

Detailsinfo

A vulnerability, which was classified as very critical, has been found in Meta react-server-dom-webpack, react-server-dom-turbopack and react-server-dom-parcel 19.0.0/19.1.0/19.1.1/19.2.0. Affected by this issue is some unknown processing of the component React Server. The manipulation with an unknown input leads to a deserialization vulnerability. Using CWE to declare the problem leads to CWE-502. The product deserializes untrusted data without sufficiently verifying that the resulting data will be valid. Impacted is confidentiality, integrity, and availability. CVE summarizes:

A pre-authentication remote code execution vulnerability exists in React Server Components versions 19.0.0, 19.1.0, 19.1.1, and 19.2.0 including the following packages: react-server-dom-parcel, react-server-dom-turbopack, and react-server-dom-webpack. The vulnerable code unsafely deserializes payloads from HTTP requests to Server Function endpoints.

The advisory is shared for download at facebook.com. This vulnerability is handled as CVE-2025-55182 since 08/08/2025. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details are unknown but a public exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 04/17/2026). This vulnerability has a historic impact due to its background and reception.

The exploit is available at exploit-db.com. It is declared as attacked. As 0-day the estimated underground price was around . The vulnerability scanner Nessus provides a plugin with the ID 277108 (Next.js Framework React Server Components Remote Code Execution (CVE-2025-66478)), which helps to determine the existence of the flaw in a target environment. This issue was added on 12/05/2025 to the CISA Known Exploited Vulnerabilities Catalog with a due date of 12/12/2025:

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

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 Exploit-DB (52506), Tenable (277108), EUVD (EUVD-2025-200983) and CERT Bund (WID-SEC-2025-2738). Once again VulDB remains the best source 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: 8.6
VulDB Meta Temp Score: 8.6

VulDB Base Score: 7.3
VulDB Temp Score: 7.3
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 10.0
CNA Vector (Meta): 🔒

CVSSv2info

AVACAuCIA
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💳💳💳💳💳💳
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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: 🔒
Access: Public
Status: Attacked
Download: 🔒

EPSS Score: 🔒
EPSS Percentile: 🔒

KEV Added: 🔒
KEV Due: 🔒
KEV Remediation: 🔒
KEV Ransomware: 🔒
KEV Notice: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 277108
Nessus Name: Next.js Framework React Server Components Remote Code Execution (CVE-2025-66478)

Exploit-DB: 🔒

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

08/08/2025 CVE reserved
12/03/2025 +117 days Advisory disclosed
12/03/2025 +0 days VulDB entry created
04/17/2026 +135 days VulDB entry last update

Sourcesinfo

Advisory: facebook.com
Status: Confirmed

CVE: CVE-2025-55182 (🔒)
GCVE (CVE): GCVE-0-2025-55182
GCVE (VulDB): GCVE-100-334172
EUVD: 🔒
CERT Bund: WID-SEC-2025-2738 - Vercel Next.js und React Server Components (React2Shell): Schwachstelle ermöglicht Codeausführung

scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 12/03/2025 16:54
Updated: 04/17/2026 13:15
Changes: 12/03/2025 16:54 (62), 12/04/2025 08:42 (2), 12/04/2025 08:51 (1), 12/05/2025 18:27 (15), 12/05/2025 22:13 (6), 12/09/2025 12:53 (1), 12/09/2025 23:45 (3), 12/12/2025 20:42 (1), 12/12/2025 22:06 (3), 04/17/2026 13:15 (3)
Complete: 🔍
Cache ID: 216::103

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