{
    "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"
                }
            }
        ]
    }
}