| 제목 | Node.js style-dictionary 5.4.3 Prototype Pollution |
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| 설명 | Prototype pollution in the public `style-dictionary/utils` entrypoint `convertTokenData()`.
When `convertTokenData(tokens, { output: "object" })` converts token arrays into nested objects, it splits `token.key` on `.` and writes each segment into the output object without rejecting dangerous path segments such as `__proto__`, `constructor`, or `prototype`.
As a result, an attacker-controlled token key like `__proto__.pp` can pollute `Object.prototype`.
This is reachable through the documented public API:
```js
mport { convertTokenData } from "style-dictionary/utils";
```
Impact: if untrusted token data is processed, 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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| 원천 | ⚠️ https://github.com/style-dictionary/style-dictionary/issues/1699 |
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| 사용자 | Dremig (UID 95003) |
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| 제출 | 2026. 06. 08. AM 07:41 (2 개월 ago) |
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| 모더레이션 | 2026. 07. 09. AM 07:08 (1 month later) |
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| 상태 | 중복 |
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| VulDB 항목 | 373109 [style-dictionary 까지 5.4.3 Expand API Local Privilege Escalation] |
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| 포인트들 | 0 |
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