Answer in brief
CVE-2026-44907 records a High severity (CVSS 7.5) vulnerability in react-server-dom: Denial of Service in Server Functions. The current sources do not mark it as known exploited. The current feed maps react-server-dom-parcel (npm), react-server-dom-parcel (npm), react-server-dom-parcel (npm), react-server-dom-turbopack (npm) and additional mapped packages. Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps react-server-dom-parcel (npm), react-server-dom-parcel (npm), react-server-dom-parcel (npm), react-server-dom-turbopack (npm) and additional mapped packages. Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| react-server-dom-parcelnpm | >=19.1.0 <19.1.9 | 19.1.9 |
| react-server-dom-parcelnpm | >=19.2.0 <19.2.8 | 19.2.8 |
| react-server-dom-parcelnpm | 19.0.0,19.0.1,19.0.2,19.0.3,19.0.4,19.0.5,19.0.6,19.0.7,19.1.0,19.1.1,19.1.2,19.1.3,19.1.4,19.1.5,19.1.6,19.1.7,19.1.8,19.2.0,19.2.1,19.2.2,19.2.3,19.2.4,19.2.5,19.2.6,19.2.7 | Not reported |
| react-server-dom-turbopacknpm | >=19.0.0 <19.0.8 | 19.0.8 |
| react-server-dom-turbopacknpm | >=19.1.0 <19.1.9 | 19.1.9 |
| react-server-dom-turbopacknpm | >=19.2.0 <19.2.8 | 19.2.8 |
| react-server-dom-turbopacknpm | 19.0.0,19.0.1,19.0.2,19.0.3,19.0.4,19.0.5,19.0.6,19.0.7,19.1.0,19.1.1,19.1.2,19.1.3,19.1.4,19.1.5,19.1.6,19.1.7,19.1.8,19.2.0,19.2.1,19.2.2,19.2.3,19.2.4,19.2.5,19.2.6,19.2.7 | Not reported |
| react-server-dom-webpacknpm | >=19.0.0 <19.0.8 | 19.0.8 |
| react-server-dom-webpacknpm | >=19.1.0 <19.1.9 | 19.1.9 |
| react-server-dom-webpacknpm | >=19.2.0 <19.2.8 | 19.2.8 |
| react-server-dom-webpacknpm | 19.0.0,19.0.1,19.0.2,19.0.3,19.0.4,19.0.5,19.0.6,19.0.7,19.1.0,19.1.1,19.1.2,19.1.3,19.1.4,19.1.5,19.1.6,19.1.7,19.1.8,19.2.0,19.2.1,19.2.2,19.2.3,19.2.4,19.2.5,19.2.6,19.2.7 | Not reported |
Published upstream
Jul 21, 2026
Evidence: source:ghsa:source_dates:source-dates:recordSource modified
Aug 17, 2026
Evidence: source:ghsa:source_dates:source-dates:recordFirst seen by HOL
Aug 8, 2026
### 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.
Quoted source text, attributed separately from HOL analysis.