Is CVE-2023-5654 actively exploited?

No active exploitation of CVE-2023-5654 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2023-5654 be exploited remotely?

Yes. CVE-2023-5654 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2023-5654?

CVE-2023-5654 has a CVSS score of 6.5 (MEDIUM).

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MEDIUM

CVE-2023-5654

CWE-285Published: October 19, 2023· Updated: Jun 17, 2026

6.5

CVSS v3.1

Official Description

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.

NVD Source

Technical Analysis

CVE-2023-5654 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.