CVE-2025-55182 — Security Box Score

CVE · referencelatest edition

Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2025-55182CRITICAL

Meta React Server Components

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   L   N   N  C  H  H  H   10.0   .9962   99.9   YES

AFFECTED
  Product                     Versions  Fixed
  react-server-dom-webpack    19.0.0 –  —
  react-server-dom-turbopack  19.0.0 –  —
  react-server-dom-parcel     19.0.0 –  —

TIMELINE
  Aug 8   Reserved by Meta
  Dec 5   Added to CISA KEV, remediation due 2025-12-12
  Dec 5   Published (CNA: Meta)

CWE-502 · CNA: Meta · CVSS v3.1 · 6 references · NVD status: Analyzed · KEV due December 12, 2025

Description

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.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
August 8, 2025	Reserved	Reserved by Meta
December 5, 2025	KEV ADDED	Added to CISA KEV, remediation due 2025-12-12
December 5, 2025	Published	Published (CNA: Meta)

Affected

Affected products and packages — 3 rows
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
Meta	react-server-dom-webpack	—	19.0.0	—
Meta	react-server-dom-turbopack	—	19.0.0	—
Meta	react-server-dom-parcel	—	19.0.0	—

Weaknesses

CWE-502

References (6)

http://www.openwall.com/lists/oss-security/2025/12/03/4 [Mailing List, Patch, Third Party Advisory]
https://aws.amazon.com/blogs/security/china-nexus-cyber-threat-groups-rapidly-exploit-react2shell-vulnerability-cve-2025-55182/ [Third Party Advisory]
https://news.ycombinator.com/item?id=46136026 [Issue Tracking]
https://react.dev/blog/2025/12/03/critical-security-vulnerability-in-react-server-components [Patch, Vendor Advisory]
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-55182 [US Government Resource]
https://www.facebook.com/security/advisories/cve-2025-55182 [Vendor Advisory]

Authoritative record: CVE-2025-55182 at cve.org

Vendors: meta

Weaknesses: CWE-502

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2025-55182 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.