CVE-2025-55182

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2025-55182
StatePUBLISHED
AssignerMeta
Source PriorityCVE Program / NVD first with legacy fallback
Published2025-12-03 16:15:56 UTC
Updated2026-08-04 05:16:35 UTC
DescriptionA 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.

Risk And Classification

Primary CVSS: v3.1 10 CRITICAL from [email protected]

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

EPSS: 0.996160000 probability, percentile 0.999460000 (date 2026-08-05)

CISA KEV: Listed on 2025-12-05; due 2025-12-12; ransomware use Known

Problem Types: CWE-502 | Deserialization of Untrusted Data (CWE-502)

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary10CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
3.1CNACVSS10CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

CISA Known Exploited Vulnerability

VendorMeta
ProductReact Server Components
NameMeta React Server Components Remote Code Execution Vulnerability
Required ActionApply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
NotesCheck for signs of potential compromise on all internet accessible REACT instances after applying mitigations. For more information, please see: https://react.dev/blog/2025/12/03/critical-security-vulnerability-in-react-server-components ; https://github.com/vercel-labs/fix-react2shell-next?tab=readme-ov-file ; https://nvd.nist.gov/vuln/detail/CVE-2025-55182

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Facebook React 19.0.0 All All All
Application Facebook React 19.1.0 All All All
Application Facebook React 19.1.1 All All All
Application Facebook React 19.2.0 All All All
Application Vercel Next.js All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Meta React-server-dom-webpack affected 19.0.0 19.0.0 semver Not specified
CNA Meta React-server-dom-webpack affected 19.1.0 19.1.1 semver Not specified
CNA Meta React-server-dom-webpack affected 19.2.0 19.2.0 semver Not specified
CNA Meta React-server-dom-turbopack affected 19.0.0 19.0.0 semver Not specified
CNA Meta React-server-dom-turbopack affected 19.1.0 19.1.1 semver Not specified
CNA Meta React-server-dom-turbopack affected 19.2.0 19.2.0 semver Not specified
CNA Meta React-server-dom-parcel affected 19.0.0 19.0.0 semver Not specified
CNA Meta React-server-dom-parcel affected 19.1.0 19.1.1 semver Not specified
CNA Meta React-server-dom-parcel affected 19.2.0 19.2.0 semver Not specified

References

ReferenceSourceLinkTags
news.ycombinator.com/item af854a3a-2127-422b-91ae-364da2661108 news.ycombinator.com Issue Tracking
www.cisa.gov/known-exploited-vulnerabilities-catalog 134c704f-9b21-4f2e-91b3-4a467353bcc0 www.cisa.gov US Government Resource
react.dev/blog/2025/12/03/critical-security-vulnerability-in-react-serv... [email protected] react.dev Patch, Vendor Advisory
aws.amazon.com/blogs/security/china-nexus-cyber-threat-groups-rapidly-exploi... 134c704f-9b21-4f2e-91b3-4a467353bcc0 aws.amazon.com Third Party Advisory
www.facebook.com/security/advisories/cve-2025-55182 [email protected] www.facebook.com Vendor Advisory
www.openwall.com/lists/oss-security/2025/12/03/4 af854a3a-2127-422b-91ae-364da2661108 www.openwall.com Mailing List, Patch, Third Party Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
CISA Known Exploited Vulnerabilities catalog CISA www.cisa.gov kev

Additional Advisory Data

SourceTimeEvent
ADP2025-12-05T00:00:00.000ZCVE-2025-55182 added to CISA KEV

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