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CVE-2026-23870

HIGH
7.5
CVSS Score
Published: May 6, 2026 at 04:24 PM UTC
Updated: August 12, 2026 at 04:08 PM UTC
3 products affected across 1 vendorReact Server Dom WebpackReact Server Dom ParcelReact Server Dom Turbopack

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Severity
HIGH7.5
Exploit prediction
EPSS 2%
SSVC
No known exploit

Description

A denial of service vulnerability could be triggered by sending specially crafted HTTP requests to server function endpoints, this could lead to server crashes, out-of-memory exceptions or excessive CPU usage; affecting the following packages: react-server-dom-webpack, react-server-dom-parcel, react-server-dom-turbopack (versions 19.0.0 through 19.0.5, 19.1.0 through 19.1.6, and 19.2.0 through 19.2.5).

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

React Server Dom Parcel· Facebooknpm
95%
19.0.0 ≤ v ≤ 19.0.519.1.0 ≤ v ≤ 19.1.619.2.0 ≤ v ≤ 19.2.519.0.019.1.019.2.0
React Server Dom Turbopack· Facebooknpm
95%
19.0.0 ≤ v ≤ 19.0.519.1.0 ≤ v ≤ 19.1.619.2.0 ≤ v ≤ 19.2.519.0.019.1.019.2.0
React Server Dom Webpack· Facebooknpm
95%
19.0.0 ≤ v ≤ 19.0.519.1.0 ≤ v ≤ 19.1.619.2.0 ≤ v ≤ 19.2.519.0.019.1.019.2.0

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

x_refsource_CONFIRMVendor Advisory
Source: cverecord
https://github.com/facebook/react/security/advisories/GHSA-rv78-f8rc-xrxh

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.5HIGHMeta
Vector?

Quick Info

StatusANALYZED
CWE
CWE-400

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