Is CVE-2026-23864 in the CISA KEV catalog?

No. CVE-2026-23864 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-23864?

CVE-2026-23864 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2026-23864?

CVE-2026-23864 has an EPSS score of 2.50% (83th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2026-23864?

Upgrade react to 19.1.5 or later.

CVE & CISA-KEV Catalog

CVE-2026-23864

HIGHEPSS 83th pctl

7.5

CVSS v3

NVD

Description

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 applications using React Server Components.

CWE-400Resource Exhaustion CWE-502Deserialization of Untrusted Data CWE-1284

How to fix

Remediation Available

reactNVD

Affected:>= 19.1.0, < 19.1.5Fixed in:19.1.5CVE-2026-23864derived from NVD

Affected:>= 19.0.0, < 19.0.4Fixed in:19.0.4CVE-2026-23864derived from NVD

Affected:>= 19.2.0, < 19.2.4Fixed in:19.2.4CVE-2026-23864derived from NVD

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploit Intelligence

2.50%probability of exploitation in 30 days

83rdpercentile

Elevated risk: more likely to be exploited than 83% of all known CVEs.

References

Vendor Advisory1

facebook.com

Other references5

Related Vulnerabilities

Other CWE-400 (Resource Exhaustion) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-44487	High	7.5	100%	KEV	Fix
CVE-2021-44228	Critical	10.0	100%	KEV + Ransom	Fix
CVE-2011-3192	High	7.8	99%	-	Fix
CVE-2019-11478	Medium	5.3	95%	-	Fix
CVE-2024-25617	Medium	5.3	89%	-	Fix
CVE-2018-1000115	High	7.5	88%	-	Fix

Embed a live status badge for CVE-2026-23864

Markdown

[![CVE-2026-23864](https://tridentstack.com/cve/badge/CVE-2026-23864.svg)](https://tridentstack.com/cve/CVE-2026-23864)

HTML

<a href="https://tridentstack.com/cve/CVE-2026-23864"><img src="https://tridentstack.com/cve/badge/CVE-2026-23864.svg" alt="CVE-2026-23864"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

See how it works Start freeThis CVE lookup is free and always will be.

This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-07-15.