TI-2023-05201 Aliases CVE-2023-5654 GHSA-rxrc-rgv4-jpvx

Improper authorization in Meta React Developer Tools Extension

HIGH 68CWE-285Published 2023-10-19 · Updated 2024-09-12

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Security bypass
Confidentiality · integrity · availability: None · Low · Low
Fix status: Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-285.

Summary

The React Developer Tools extension registers a message listener with window.addEventListener('message', <listener>) in a content script that is accessible to any webpage that is active in the browser. Within the listener is code that requests a URL derived from the received message via fetch(). The URL is not validated or sanitised before it is fetched, thus allowing a malicious web page to arbitrarily fetch URL’s via the victim's browser.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00558 46th percentileScored 2026-11-07

Fix Fixed React Developer Tools Extension (Meta): 4.28.4react-devtools-core (npm): 4.28.4

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: Yes
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Meta	React Developer Tools Extension	before 4.28.4	4.28.4	Patch available	CNA
—	react-devtools-core (npm)	before 4.28.4	4.28.4	Patch available	GHSA-rxrc-rgv4-jpvx

React Developer Tools Extension VendorMeta Affected before 4.28.4 Fixed in 4.28.4 Patch available CNA
react-devtools-core (npm) Vendor— Affected before 4.28.4 Fixed in 4.28.4 Patch available GHSA-rxrc-rgv4-jpvx

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:facebook:react-devtools::::::::	before 4.28.4	Vulnerable	Meta

cpe:2.3:a:facebook:react-devtools:*:*:*:*:*:*:*:* Versions before 4.28.4 Vulnerable ·Meta

Remediation

Fix · CNA React Developer Tools Extension (Meta) Fixed in 4.28.4
Fix · GHSA-rxrc-rgv4-jpvx react-devtools-core (npm) Fixed in 4.28.4 Advisory →

Timeline

2026-10-02 Threatist record created from CVE-2023-5654
2026-10-03 Alias added: GHSA-rxrc-rgv4-jpvx

References

Patch 1

https://gist.github.com/CalumHutton/1fb89b64409570a43f89d1fd3274b231

Advisory 1

https://nvd.nist.gov/vuln/detail/CVE-2023-5654

Other 4

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences