SECUFOCUSNOW
Home›CVE index›CVE-2026-23864
Review reviewHigh

CVE-2026-23864

Meta react-server-dom-webpack, react-server-dom-turbopack, react-server-dom-parcel

Multiple denial of service vulnerabilities exist in React Server Components, affecting the following packages: react-server-dom-parcel, react-server-dom-turbopack, react-server-dom-webpack. The vulnerabilities are triggered by sending specially crafted HTTP requests to Server Function endpoints, and could lead to server crashes, out-of-memory exceptions or excessive CPU usage; depending on the vulnerable code path being exercised, the application configuration and application code. Strongly consider upgrading to the latest package versions to reduce risk and prevent availability issues in a...

CVSS
7.5
EPSS
2.39%
82.3% percentile
CISA KEV
Not listed
Published
2026.01.27
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability2.39%
Technical severityCVSS 7.5

Vulnerability overview

Multiple denial of service vulnerabilities exist in React Server Components, affecting the following packages: react-server-dom-parcel, react-server-dom-turbopack, react-server-dom-webpack. The vulnerabilities are triggered by sending specially crafted HTTP requests to Server Function endpoints, and could lead to server crashes, out-of-memory exceptions or excessive CPU usage; depending on the vulnerable code path being exercised, the application configuration and application code. Strongly consider upgrading to the latest package versions to reduce risk and prevent availability issues in a...

Affected product and versions

Product
Meta react-server-dom-webpack, react-server-dom-turbopack, react-server-dom-parcel
Affected versions
>= 19.0.0 < 19.0.4, >= 19.1.0 < 19.1.5, >= 19.2.0 < 19.2.4
Fixed versions
19.0.4, 19.1.5, 19.2.4

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Meta react-server-dom-webpack, react-server-dom-turbopack, react-server-dom-parcel and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
CWE-1284, CWE-400, CWE-502