CVE-2026-48161

react18-use is a React 19 use hook shim. Between 2026-05-19 01:07:01 and 2026-05-19 15:20:43, the default branch contained malicious commits 7b79148d1495a2505f9277da295a98cf176f4496 through 7b79148d1495a2505f9277da295a98cf176f4496 that executed remote attacker-controlled code on developer machines during `npm install`. The commits were removed by force-push, but local clones, forks, and direct-SHA URLs may still contain them, and `npm install` against an affected checkout will still execute the code today. The package was not published to npm. `src/install.js` was added and wired into the `postinstall` script. It fetched a JavaScript payload from an attacker-controlled HTTPS endpoint (configurable via an environment variable), disabled TLS verification, and evaluated the response as code with `require` available. Execution was deliberately skipped on CI and cloud/serverless environments, targeting developer workstations. The second-stage payload was attacker-hosted and cannot be reconstructed. Assume full compromise of anything reachable from a Node process with the user's permissions. Those who ran `npm install` against an affected checkout on a developer machine on or after 2026-05-19 01:07:01 should treat the machine as compromised, rotate every credential the machine could reach, audit account activity since 2026-05-19 01:07:01, and clean local clones.

• CWE-506

• https://github.com/dai-shi/react18-use/security/advisories/GHSA-32xh-vg5f-64fm

Published

Aug 10, 2026

Last Modified

Aug 11, 2026

Status

Received

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2026-48156pypdf is a free and open-source pure-python PDF library. Pri…3.3
• CVE-2026-48157Slim is a PHP micro framework that enables users to write si…6.1
• CVE-2026-48158use-context-selector is a React useContextSelector hook in u…9.3
• CVE-2026-48159use-reducer-async is a React useReducer with async actions. …9.3
• CVE-2026-4816A Reflected Cross Site Scripting (XSS) vulnerability has bee…5.4
• CVE-2026-48160react-tracked provides state usage tracking with Proxies. Be…9.3
• CVE-2026-48163MariaDB server is a community developed fork of MySQL server…7.2
• CVE-2026-48165MariaDB server is a community developed fork of MySQL server…7.2
• CVE-2026-48166Filament is a collection of full-stack components for accele…5.3
• CVE-2026-48167Filament is a collection of full-stack components for accele…6.4
• CVE-2026-48168PraisonAI is a multi-agent teams system. In versions prior t…10
• CVE-2026-48169PraisonAI is a multi-agent teams system. Versions prior to 0…8.8