{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-21697","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-01-02T18:45:27.397Z","datePublished":"2026-01-07T22:29:57.393Z","dateUpdated":"2026-01-08T20:37:17.978Z"},"containers":{"cna":{"title":"axios4go's Race Condition in Shared HTTP Client Allows Proxy Configuration Leak","problemTypes":[{"descriptions":[{"cweId":"CWE-362","lang":"en","description":"CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')","type":"CWE"}]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"PRESENT","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"HIGH","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":8.2,"baseSeverity":"HIGH","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N","version":"4.0"}}],"references":[{"name":"https://github.com/rezmoss/axios4go/security/advisories/GHSA-cmj9-27wj-7x47","tags":["x_refsource_CONFIRM"],"url":"https://github.com/rezmoss/axios4go/security/advisories/GHSA-cmj9-27wj-7x47"},{"name":"https://github.com/rezmoss/axios4go/commit/b651604c64e66a115ab90cdab358b0181d74a842","tags":["x_refsource_MISC"],"url":"https://github.com/rezmoss/axios4go/commit/b651604c64e66a115ab90cdab358b0181d74a842"},{"name":"https://github.com/rezmoss/axios4go/releases/tag/v0.6.4","tags":["x_refsource_MISC"],"url":"https://github.com/rezmoss/axios4go/releases/tag/v0.6.4"}],"affected":[{"vendor":"rezmoss","product":"axios4go","versions":[{"version":"< 0.6.4","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-01-07T22:29:57.393Z"},"descriptions":[{"lang":"en","value":"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":{"advisory":"GHSA-cmj9-27wj-7x47","discovery":"UNKNOWN"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-01-08T20:37:08.423675Z","id":"CVE-2026-21697","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-01-08T20:37:17.978Z"}}]}}