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CVE-2025-55182

⛔ critical
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Summary

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 Score
10.0
Critical
EPSS Score
57.9
Exploit Probability
Published Date
2025-12-03
First Seen: 2026-01-05
📊 Relative Risk Intelligence

This CVE is Extremely High Risk - more severe than 100.0% of all 317,883 vulnerabilities in our database.

#1
Top 5% most severe
Severity Percentile
🎯 CISA SSVC Assessment Updated: Dec 5, 2025
🔍 Exploitation Status
Active
Exploits detected in the wild
⚙️ Automatable
YES
Can be exploited automatically
💥 Technical Impact
Total
Complete system compromise possible
SSVC data provided by CISA
Last Modified 2025-12-10
Source NVD 🔗
CVSS Vector 3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
CWE IDs (Weakness Types)

📦 Affected Products 14

🔗 References 6

🔗 Related CVEs 6

CVE ID Severity CVSS EPSS Summary Published
CVE-2026-27977 🔶 medium 5.4 0.0 Next.js is a React framework for building full-stack web applications. Starting in version 16.0.1 and prior to version 1... 2026-03-18
CVE-2026-27978 🔶 medium 4.3 0.0 Next.js is a React framework for building full-stack web applications. Starting in version 16.0.1 and prior to version 1... 2026-03-18
CVE-2026-27979 ⚠️ high 7.5 0.0 Next.js is a React framework for building full-stack web applications. Starting in version 16.0.1 and prior to version 1... 2026-03-18
CVE-2026-27980 ⚠️ high 7.5 0.0 Next.js is a React framework for building full-stack web applications. Starting in version 10.0.0 and prior to version 1... 2026-03-18
CVE-2026-29057 🔶 medium 6.5 0.1 Next.js is a React framework for building full-stack web applications. Starting in version 9.5.0 and prior to versions 1... 2026-03-18
CVE-2026-23864 ⚠️ high 7.5 0.9 Multiple denial of service vulnerabilities exist in React Server Components, affecting the following packages: react-ser... 2026-01-26
These CVEs affect the same products