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AppRegistry mishandles keys inherited from Object.prototype #58196
Description
Description
The public AppRegistry stores app and section keys in plain object literals. Looking up an unregistered key such as constructor returns an inherited Object member. Registering the valid string key __proto__ mutates the registry prototype rather than creating an own entry, so the app/section key lists omit it.
The defect is present in React Native 0.87.1 and current main.
Steps to reproduce
Call AppRegistry.getRunnable("constructor"), then register an app or section named __proto__ and inspect getAppKeys() / getSectionKeys().
Expected behavior
Only explicitly registered keys should resolve, and all string app/section keys should be stored as ordinary own entries.
React Native Version
0.87.1 and current main.
Activity
react-native-bot commentedon Aug 30, 2026
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react-native-bot commentedon Sep 24, 2026
This issue is waiting for author's feedback since 24 days. Please provide the requested feedback or this will be closed in 7 days.
react-native-bot commentedon Oct 1, 2026
This issue was closed because the author hasn't provided the requested feedback after 7 days.