dai-shi react-tracked Postinstall Script src/install.js code injection

Summaryinfo

A vulnerability was found in dai-shi react-tracked and classified as critical. Affected by this issue is some unknown functionality of the file src/install.js of the component Postinstall Script. Executing a manipulation can lead to code injection. This vulnerability is handled as CVE-2026-48160. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in dai-shi react-tracked (the affected version is unknown). It has been declared as critical. This vulnerability affects an unknown code of the file src/install.js of the component Postinstall Script. The manipulation with an unknown input leads to a code injection vulnerability. The CWE definition for the vulnerability is CWE-94. The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

react-tracked provides state usage tracking with Proxies. Between 2026-05-18 19:26:36 and 2026-05-19 15:22:45, the default branch contained malicious commits 6978272a7d6ca02225cb747ea69f427512e33699 through 949f1a3d6bb1ff7d1a0dec892afd773e742627e8 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 2026-05-18 19:26:36 should treat the machine as compromised, rotate every credential the machine could reach, audit account activity** since 2026-05-18 19:26:36, and clean local clones.

The advisory is shared for download at github.com. This vulnerability was named CVE-2026-48160 since 05/21/2026. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1059.

Applying the patch 949f1a3d6bb1ff7d1a0dec892afd773e742627e8 is able to eliminate this problem.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• JavaScript Library

Vendor

• dai-shi

Name

• react-tracked

Website

• Product: https://github.com/dai-shi/react-tracked/

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Once again VulDB remains the best source for vulnerability data.

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