CVE-2026-44907 json
react-server-dom: Denial of Service in Server Functions
published 2026-07-21 3 mo ago modified 2026-08-17 2 mo ago also EUVD-2026-46307 , GHSA-wx67-qw84-cm4g
- cvss
- 7.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.6%
- EPSS 0.6% chance of exploitation in 30 days, percentile 48%
- public exploits
- 0
- none known
Summary
A denial of service vulnerability could be triggered by sending specially crafted HTTP requests to server function endpoints, this could lead to excessive CPU usage; affecting the following packages: react-server-dom-webpack, react-server-dom-parcel, react-server-dom-turbopack (versions 19.0.0 through 19.0.7, 19.1.0 through 19.1.8, and 19.2.0 through 19.2.7).
Patch / fix
- npm react-server-dom-webpack 19.0.8, 19.1.9, 19.2.8
- npm react-server-dom-turbopack 19.0.8, 19.1.9, 19.2.8
- npm react-server-dom-parcel 19.1.9, 19.2.8
CISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 3 mo ago
Exploit prediction
0.60% chance of exploitation in the next 30 days, higher than 48% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| GitHub | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| npm | react-server-dom-webpack | >=19.0.0, <19.0.8 >=19.1.0, <19.1.9 >=19.2.0, <19.2.8 |
19.0.8 19.1.9 19.2.8 |
| npm | react-server-dom-turbopack | >=19.0.0, <19.0.8 >=19.1.0, <19.1.9 >=19.2.0, <19.2.8 |
19.0.8 19.1.9 19.2.8 |
| npm | react-server-dom-parcel | >=19.1.0, <19.1.9 >=19.2.0, <19.2.8 |
19.1.9 19.2.8 |
Affected products
- Meta react-server-dom-turbopack
- Meta react-server-dom-parcel
- Meta react-server-dom-webpack
Classification
- Weakness
- Technology feeds
References
-
github.com
/react/react/security/advisories/GHSA-wx67-qw84-cm4g
web, advisory
-
nvd.nist.gov
/vuln/detail/CVE-2026-44907
advisory
-
github.com
/react/react
package
Sources
- CVE List CVE-2026-44907
- GitHub Advisory GHSA-wx67-qw84-cm4g
- NVD CVE-2026-44907
- Maintainer advisory GHSA-wx67-qw84-cm4g
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
The maintainers of react/react published their own advisory on GitHub. Reviewed sources take precedence over it.