| Title | Node.js enquirer 2.4.1 Prototype Pollution |
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| Description | Prototype pollution in the public `Enquirer` prompt flow when `question.name` contains dangerous path segments such as `__proto__`.
When a prompt is submitted, `Enquirer` stores the answer using an internal nested setter where the path is derived from the externally supplied `question.name`. Because dangerous segments like `__proto__`, `constructor`, and `prototype` are not rejected, a prompt name such as `__proto__.pp` can pollute `Object.prototype`.
This is reachable through the public package API via `new Enquirer()`, `register(...)`, and `prompt(...)`.
Impact: if an application allows attacker-controlled prompt definitions or otherwise passes untrusted values into `question.name`, an attacker may be able to trigger application-wide prototype pollution, leading to logic corruption, unsafe property resolution, denial of service, or downstream exploitation depending on how polluted properties are used. |
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| Source | ⚠️ https://github.com/enquirer/enquirer/issues/487 |
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| User | Dremig (UID 95003) |
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| Submission | 06/08/2026 07:57 (2 months ago) |
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| Moderation | 07/09/2026 07:15 (1 month later) |
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| Status | Accepted |
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| VulDB entry | 377113 [enquirer up to 2.4.1 Public Package API Enquirer.set question.name prototype pollution] |
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| Points | 20 |
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