AIKIDO-2026-936429
axios is vulnerable to Prototype Pollution
59
CVE Score
Medium
Prototype Pollution
TL;DR
The Node HTTP adapter builds its redirect options with a plain beforeRedirects: {} object, so dispatchBeforeRedirect looks up its hook on an object that still inherits from Object.prototype. A polluted prototype property reachable at the key the redirect dispatcher checks can therefore run during a redirect and rewrite the request's destination, host, or headers before the redirected request is sent. The fix builds beforeRedirects on a null-prototype object so no inherited hook is reachable.
How do I fix this?
Upgrade the axios library to the patch version.
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range and a separate prototype-pollution primitive elsewhere in your application can reach Object.prototype.
Package
Versions
0.28.0 - 0.33.0
Fixed in 0.34.0Background info
axios is vulnerable to Prototype Pollution in versions 0.28.0 - 0.33.0.
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