●Change8

Migrating to Axios v0.30.3

Version v0.30.3 introduces 1 breaking change. This guide details how to update your code.

Released: 2/18/2026

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Breaking Changes
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Migration Steps
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Affected Symbols

Breaking Changes

●Issue #1

Configuration merging behavior has changed: Axios now restricts the merging of the __proto__ key within configuration objects. If your code relied on deep-merging patterns targeting the object prototype via Axios config, those operations will now be blocked.

Migration Steps

  1. 1
    Review any deep-merging logic in configuration objects to ensure they do not rely on setting the __proto__ key, as this is now blocked for security reasons.

Release Summary

This critical security release addresses a high-priority vulnerability related to prototype pollution leading to Denial of Service (DoS) by restricting the merging of the __proto__ key in configuration objects.

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View the full release notes and all changes for Axios v0.30.3.

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