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Fencer Intel
high 7.5

CVE-2026-44907 json

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

published 3mo ago modified 2mo 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 49%
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

Is CVE-2026-44907 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
3mo ago

Exploit prediction

0.60% chance of exploitation in the next 30 days, higher than 49% of all scored CVEs (FIRST EPSS, 2026-11-09).

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
  • CWE-400 Uncontrolled Resource Consumption
  • CWE-770 Allocation of Resources Without Limits or Throttling
Technology feeds

References

Sources

Fencer Intel 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.