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I. Basic Information for CVE-2026-21697
Vulnerability Information

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Vulnerability Title
axios4go's Race Condition in Shared HTTP Client Allows Proxy Configuration Leak
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
使用共享资源的并发执行不恰当同步问题(竞争条件)
Source: NVD (National Vulnerability Database)
Vulnerability Title
axios4go 竞争条件问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
axios4go是Rez Moss个人开发者的一个HTTP客户端库。 axios4go 0.6.4之前版本存在竞争条件问题漏洞,该漏洞源于共享HTTP客户端配置存在竞争条件,可能导致并发请求时修改共享属性。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
VendorProductAffected VersionsCPESubscribe
rezmossaxios4go < 0.6.4 -
II. Public POCs for CVE-2026-21697
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III. Intelligence Information for CVE-2026-21697
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