Prototype Pollution in deephas 1.0.7

Successful exploitation allows an attacker to pollute Object.prototype and thereby influence the behavior of objects across the affected Node.js application. Depending on how the application uses object properties, this can lead to integrity compromise, logic manipulation, authentication or authorization bypass, denial of service, and potentially remote code execution where polluted properties are later consumed by dangerous sinks such as eval or child_process-related functionality. The supplied context also states high confidentiality, integrity, and availability impacts.

Until an upgrade can be deployed, do not pass attacker-controlled or otherwise untrusted paths or data into deephas.set. Enforce strict allowlisting of permitted property paths and keys, and explicitly deny proto, prototype, constructor, and equivalent nested variants. Add input validation and defensive checks to prevent prototype mutation, and consider runtime hardening measures that reduce the impact of prototype pollution in the hosting application.

Upgrade deephas to version 1.0.8 or later. Version 1.0.7 is vulnerable. If maintaining a fork or patch set, ensure the library rejects or safely handles prototype-related property paths, including proto, prototype, constructor, and nested forms such as constructor.prototype.*. Review dependent code paths that invoke deephas.set and update lockfiles and transitive dependencies accordingly.