Advisory record · GHSA-83fc-fqcc-2hmg

React Server Components have multiple Denial of Service Vulnerabilities

CVSS 7.5 HighEPSS 0.026 · 85th percentile

Published by the GitHub Advisory Database at 29 Jan 2026, 15:00 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

Package	Ecosystem	Affected	Fixed in
react-server-dom-parcel	npm	>=19.0.0, <19.0.4 \|\| >=19.1.0-canary-7130d0c6-20241212, <19.1.5 \|\| >=19.2.0-canary-63779030-20250328, <19.2.4	19.0.4, 19.1.5, 19.2.4
react-server-dom-turbopack	npm	>=19.1.0-canary-7130d0c6-20241212, <19.1.5 \|\| >=19.0.0, <19.0.4 \|\| >=19.2.0-canary-63779030-20250328, <19.2.4	19.1.5, 19.0.4, 19.2.4
react-server-dom-webpack	npm	>=19.2.0-canary-63779030-20250328, <19.2.4 \|\| >=19.1.0-canary-7130d0c6-20241212, <19.1.5 \|\| >=19.0.0, <19.0.4	19.2.4, 19.1.5, 19.0.4

Identifiers: GHSA-83fc-fqcc-2hmg · CVE-2026-23864
Weakness (CWE): CWE-400 · CWE-502 · CWE-1284
Tags: Denial of service
Insecure deserialization
CWE-1284
Published: 29 Jan 2026
Updated: 3 Feb 2026

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
7.5	High	3.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	GitHub Advisory Database

CISA KEV Not listed.
EPSS 0.026, the 85th percentile, on 8 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the GitHub Advisory Database, published 29 Jan 2026. New records show when each source confirmed them.

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.