Vulnerability GHSA-wx67-qw84-cm4g

High Risk
HIGH RISK
CVSS Score: 7.5
Score Range: 7.0–8.9
High severity vulnerabilities (CVSS 7.0–8.9). Serious vulnerabilities that should be prioritized soon after critical fixes.
3 months ago
July 24, 2026 at 09:12 PM UTC
react-server-dom: Denial of Service in Server Functions
19.1.0 - 19.1.8 and 19.2.0 - 19.2.7
19.1.0 - 19.1.8 and 19.2.0 - 19.2.7

Summary

react-server-dom: Denial of Service in Server Functions

Details

Impact

A denial of service vulnerability could be triggered by sending specially crafted HTTP requests to server function endpoints, this could lead to out-of-memory exceptions or excessive CPU usage.

We recommend updating immediately.

The vulnerability exists in versions 19.0.0 through 19.0.7, 19.1.0 through 19.1.8, and 19.2.0 through 19.2.7 of:

  • react-server-dom-webpack
  • react-server-dom-parcel
  • react-server-dom-turbopack

Patches

Fixes were back ported to versions 19.0.8, 19.1.9, and 19.2.8.

If you are using any of the above packages please upgrade to any of the fixed versions immediately.

If your app’s React code does not use a server, your app is not affected by this vulnerability. If your app does not use a framework, bundler, or bundler plugin that supports React Server Components, your app is not affected by this vulnerability.

Timeline

Published
3 months ago
July 24, 2026 at 09:12 PM UTC
Fixed (19.2.8)
3 months ago
July 21, 2026 at 03:41 PM UTC
Fixed (19.2.8)
3 months ago
July 21, 2026 at 03:41 PM UTC
Fixed (19.2.8)
3 months ago
July 21, 2026 at 03:41 PM UTC
Fixed (19.1.9)
3 months ago
July 21, 2026 at 03:42 PM UTC
Fixed (19.1.9)
3 months ago
July 21, 2026 at 03:42 PM UTC
Fixed (19.1.9)
3 months ago
July 21, 2026 at 03:42 PM UTC
Fixed (19.0.8)
3 months ago
July 21, 2026 at 03:43 PM UTC
Fixed (19.0.8)
3 months ago
July 21, 2026 at 03:43 PM UTC
Last Modified
3 months ago
July 24, 2026 at 09:16 PM UTC