SB2025121220 - Denial of service in Next.js App Router

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Main Vulnerability Database SB2025121220

SB2025121220 - Denial of service in Next.js App Router

Published: December 12, 2025 Updated: January 16, 2026

Security Bulletin ID SB2025121220
Severity
Medium
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Denial of service

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 security vulnerability.


1) Deserialization of Untrusted Data (CVE-ID: CVE-2025-55184)

The vulnerability allows a remote attacker to perform a denial of service attack.

The vulnerability exists due to insecure input validation when processing serialized data. A remote attacker can send a specially crafted HTTP request, which can cause an infinite loop and prevent future HTTP requests from being served, leading to a denial of service condition. 

The vulnerability affects the following components:

- react-server-dom-webpack (Meta) 
- react-server-dom-turbopack (Meta) 
- react-server-dom-parcel (Meta) 



Remediation

Install update from vendor's website.

References