CVE-2026-21697

Published January 7th, 2026

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CVSS v3

8.1

HIGH

CVSS v2

N/A

Affected

PROJECT

Description

axios4go is a Go HTTP client library. Prior to version 0.6.4, a race condition vulnerability exists in the shared HTTP client configuration. The global `defaultClient` is mutated during request execution without synchronization, directly modifying the shared `http.Client`'s `Transport`, `Timeout`, and `CheckRedirect` properties. Impacted applications include that that use axios4go with concurrent requests (multiple goroutines, `GetAsync`, `PostAsync`, etc.), those where different requests use different proxy configurations, and those that handle sensitive data (authentication credentials, tokens, API keys). Version 0.6.4 fixes this issue.

rezmoss/axios4go

A Go HTTP client library inspired by Axios, providing a simple and intuitive API for making HTTP requests with features like interceptors, JSON handling, configurable instances, and automatic retries

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