goshs has a file-based ACL authorization bypass in goshs state-changing routes_CVE-2026-40189

{
    "lastseen": "",
    "description": "goshs is a SimpleHTTPServer written in Go. Prior to 2.0.0-beta.4, goshs enforces the documented per-folder .goshs ACL/basic-auth mechanism for directory listings and file reads, but it does not enforce the same authorization checks for state-changing routes. An unauthenticated attacker can upload files with PUT, upload files with multipart POST /upload, create directories with ?mkdir, and delete files with ?delete inside a .goshs-protected directory. By deleting the .goshs file itself, the attacker can remove the folder's auth policy and then access previously protected content without credentials. This results in a critical authorization bypass affecting confidentiality, integrity, and availability. This vulnerability is fixed in 2.0.0-beta.4.",
    "published": "2026-04-10T19:44:54.672Z",
    "modified": "2026-04-10T19:44:54.672Z",
    "type": "cve",
    "title": "goshs has a file-based ACL authorization bypass in goshs state-changing routes",
    "source": "GitHub_M",
    "references": "https://github.com/patrickhener/goshs/security/advisories/GHSA-wvhv-qcqf-f3cx\nhttps://github.com/patrickhener/goshs/commit/f212c4f4a126556bab008f79758e21a839ef2c0f\nhttps://github.com/patrickhener/goshs/releases/tag/v2.0.0-beta.4",
    "id": "CVE-2026-40189",
    "bulletinFamily": "",
    "cwe": [
        "CWE-862"
    ],
    "cvelist": null,
    "sourceData": "patrickhener goshs < 2.0.0-beta.4",
    "sourceHref": "",
    "cvss": {
        "score": 9.3,
        "severity": "CRITICAL",
        "vector": "CVSS:4.0/AV:N/AC:L/AT:N/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": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "goshs",
    "version": "< 2.0.0-beta.4",
    "vendor": "patrickhener",
    "ai_description": "Critical authorization bypass in goshs state-changing routes, allowing unauthenticated attackers to upload, delete, and access protected files and directories.",
    "ai_severity": "Critical",
    "ai_vendor": "patrickhener",
    "ai_product": "goshs",
    "ai_version": "< 2.0.0-beta.4",
    "ai_score": 9.3
}