Server-Side Request Forgery vulnerability in GitHub Enterprise Server allowed access to internal services via path traversal in upload endpoint_CVE-2026-9312

{
    "lastseen": "",
    "description": "A server-side request forgery (SSRF) vulnerability was identified in GitHub Enterprise Server that allowed an unauthenticated attacker to send crafted requests to internal services by exploiting insufficient input validation in an upload endpoint. By injecting path traversal content into request parameters, an attacker could bypass the intended request flow and redirect internal API calls, potentially accessing internal services and exposing sensitive credentials. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.22 and was fixed in versions 3.16.20, 3.17.17, 3.18.11, 3.19.8, 3.20.4, and 3.21.1. This vulnerability was reported via the GitHub Bug Bounty program.",
    "published": "2026-05-27T00:02:32.159Z",
    "modified": "2026-05-27T00:02:32.159Z",
    "type": "cve",
    "title": "Server-Side Request Forgery vulnerability in GitHub Enterprise Server allowed access to internal services via path traversal in upload endpoint",
    "source": "GitHub_P",
    "references": "https://docs.github.com/en/[email protected]/admin/release-notes#3.16.20\nhttps://docs.github.com/en/[email protected]/admin/release-notes#3.17.17\nhttps://docs.github.com/en/[email protected]/admin/release-notes#3.18.11\nhttps://docs.github.com/en/[email protected]/admin/release-notes#3.19.8\nhttps://docs.github.com/en/[email protected]/admin/release-notes#3.20.4\nhttps://docs.github.com/en/[email protected]/admin/release-notes#3.21.1",
    "id": "CVE-2026-9312",
    "bulletinFamily": "",
    "cwe": [
        "CWE-918"
    ],
    "cvelist": null,
    "sourceData": "GitHub Enterprise Server 3.16.0\nGitHub Enterprise Server 3.17.0\nGitHub Enterprise Server 3.18.0\nGitHub Enterprise Server 3.19.0\nGitHub Enterprise Server 3.20.0\nGitHub Enterprise Server 3.21.0",
    "sourceHref": "",
    "cvss": {
        "score": 9.2,
        "severity": "CRITICAL",
        "vector": "CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
        "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": "",
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            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "Enterprise Server",
    "version": "3.16.0",
    "vendor": "GitHub",
    "ai_description": "Server-Side Request Forgery vulnerability allowing access to internal services via path traversal in upload endpoint",
    "ai_severity": "Critical",
    "ai_vendor": "GitHub",
    "ai_product": "GitHub Enterprise Server",
    "ai_version": "3.16.0-3.21.0",
    "ai_score": 9.2
}