| Title | Node.js @tamagui/web 2.2.0 Prototype Pollution |
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| Description | @tamagui/[email protected] exposes updateConfig() from the root package. The function accepts an arbitrary config key and uses it to select the merge target:
Object.assign(config[key], value)
When the key is __proto__, config[key] resolves to Object.prototype if the config object does not define its own __proto__ property. As a result, updateConfig("__proto__", value) can write attacker-controlled properties onto Object.prototype. |
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| Source | ⚠️ https://github.com/tamagui/tamagui/issues/4029 |
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| User | wjm1 (UID 98929) |
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| Submission | 06/11/2026 17:04 (1 month ago) |
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| Moderation | 07/14/2026 07:29 (1 month later) |
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| Status | Accepted |
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| VulDB entry | 378249 [tamagui up to 2.3.0 config.ts updateConfig prototype pollution] |
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| Points | 20 |
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