Apache APISIX: Identity Injection via forward-auth Plugin Missing Header Cleanup_CVE-2026-39998

{
    "lastseen": "",
    "description": "Improper Input Validation vulnerability in Apache APISIX.\n\nThe attacker can take advantage of certain configuration in forward-auth plugin to spoof identity headers.\nThis issue affects Apache APISIX: from 2.12.0 through 3.16.0.\n\nUsers are recommended to upgrade to version 3.17.0, which fixes the issue.",
    "published": "2026-06-19T13:04:39.608Z",
    "modified": "2026-06-19T13:05:22.390Z",
    "type": "cve",
    "title": "Apache APISIX: Identity Injection via forward-auth Plugin Missing Header Cleanup",
    "source": "apache",
    "references": "https://lists.apache.org/thread/vgkvy396010d7g6m0jrn4d3hjf2svlvv",
    "id": "CVE-2026-39998",
    "bulletinFamily": "",
    "cwe": [
        "CWE-20"
    ],
    "cvelist": null,
    "sourceData": "Apache Software Foundation Apache APISIX 2.12.0",
    "sourceHref": "",
    "cvss": {
        "score": 5.8,
        "severity": "MEDIUM",
        "vector": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H",
        "version": "4.0"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "Apache APISIX",
    "version": "2.12.0",
    "vendor": "Apache Software Foundation",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}