AIKIDO-2026-10741
axios is vulnerable to Prototype Pollution
82
High Risk
This Affects:
axiosTL;DR
The 0.x HTTP client merges configuration and headers in ways that historically supported prototype-chain lookups and loose object shape checks across adapters. Serialized errors could expose sensitive fields when logs or telemetry stringify error payloads. Node-side fetching treated proxy environment semantics and Unix socket paths with less enforcement than modern threat models expect. The release tightens merging and adapter reads with null-prototype merges and own-property checks, redacts sensitive keys during error serialization by default, improves NO_PROXY matching for IPv6-mapped forms, strips Proxy-Authorization when no proxy applies, gates socketPath behind an allowlist, and hardens URL parameter encoding.
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range.
Background info
axios is vulnerable to Prototype Pollution in versions 0.0.1 - 0.31.1.
How to fix this
Upgrade the axios library to the patch version.
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SOC 2Compliant
ISO 27001Compliant