Vulnerability details
CVE-2025-55182
Actively exploited
Meta react-server-dom-parcelMeta react-server-dom-turbopackMeta react-server-dom-webpack
CVSS 3.1
10.0Critical
Remedy
Required action (CISA): Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. (due: 2025-12-12)
Official 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.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 10.0Critical | 3.1 | CVEProject cvelistV5 (CNA) (Meta) | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| Meta | react-server-dom-parcel | 19.0.0 ≤ v ≤ 19.0.0 | CVEProject cvelistV5 (CNA) |
| Meta | react-server-dom-parcel | 19.1.0 ≤ v ≤ 19.1.1 | CVEProject cvelistV5 (CNA) |
| Meta | react-server-dom-parcel | 19.2.0 ≤ v ≤ 19.2.0 | CVEProject cvelistV5 (CNA) |
| Meta | react-server-dom-turbopack | 19.0.0 ≤ v ≤ 19.0.0 | CVEProject cvelistV5 (CNA) |
| Meta | react-server-dom-turbopack | 19.1.0 ≤ v ≤ 19.1.1 | CVEProject cvelistV5 (CNA) |
| Meta | react-server-dom-turbopack | 19.2.0 ≤ v ≤ 19.2.0 | CVEProject cvelistV5 (CNA) |
| Meta | react-server-dom-webpack | 19.0.0 ≤ v ≤ 19.0.0 | CVEProject cvelistV5 (CNA) |
| Meta | react-server-dom-webpack | 19.1.0 ≤ v ≤ 19.1.1 | CVEProject cvelistV5 (CNA) |
| Meta | react-server-dom-webpack | 19.2.0 ≤ v ≤ 19.2.0 | CVEProject cvelistV5 (CNA) |
References and advisories
6- https://www.facebook.com/security/advisories/cve-2025-55182 x_refsource_CONFIRM
- https://react.dev/blog/2025/12/03/critical-security-vulnerability-in-react-server-components x_refsource_CONFIRM
- https://aws.amazon.com/blogs/security/china-nexus-cyber-threat-groups-rapidly-exploit-react2shell-vulnerability-cve-2025-55182/ media-coverage
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-55182 government-resource
- http://www.openwall.com/lists/oss-security/2025/12/03/4
- https://news.ycombinator.com/item?id=46136026
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Details
- Published
- 2025-12-03
- Last updated
- 2026-10-07
- State
- Published
- Assigner (CNA)
- Meta
- Kolun priority
- 80 · Critical
CISA KEV catalog
- Date added
- 2025-12-05
- Due date
- 2025-12-12
- Used in ransomware
- Yes
Exploit prediction (EPSS)
99.73%
Probability of exploitation in 30 days
99.9%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- Yes
- Exploitation
- Active
- Technical impact
- Total
Weaknesses (CWE)
- CWE-502Deserialization of Untrusted Data