whisperX REST API: SSRF in download_from_url() — URL validation happens after HTTP request, extension bypass via .mp3_CVE-2026-34981

{
    "lastseen": "",
    "description": "The whisperX API is a tool for enhancing and analyzing audio content. From 0.3.1 to 0.5.0, FileService.download_from_url() in app/services/file_service.py calls requests.get(url) with zero URL validation. The file extension check occurs AFTER the HTTP request is already made, and can be bypassed by appending .mp3 to any internal URL. The /speech-to-text-url endpoint is unauthenticated. This vulnerability is fixed in 0.6.0.",
    "published": "2026-04-06T16:19:13.887Z",
    "modified": "2026-04-06T18:45:41.844Z",
    "type": "cve",
    "title": "whisperX REST API: SSRF in download_from_url() \u2014 URL validation happens after HTTP request, extension bypass via .mp3",
    "source": "GitHub_M",
    "references": "https://github.com/pavelzbornik/whisperX-FastAPI/security/advisories/GHSA-6rc7-r867-c635\nhttps://github.com/pavelzbornik/whisperX-FastAPI/issues/256\nhttps://github.com/pavelzbornik/whisperX-FastAPI/commit/ef78fe2001deede5354031e4200d41c6a7e8cbfc",
    "id": "CVE-2026-34981",
    "bulletinFamily": "",
    "cwe": [
        "CWE-918"
    ],
    "cvelist": null,
    "sourceData": "pavelzbornik whisperX-FastAPI >= 0.3.1, < 0.6.0",
    "sourceHref": "",
    "cvss": {
        "score": 5.8,
        "severity": "MEDIUM",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N",
        "version": "3.1"
    },
    "cvss2": [],
    "cvss3": {
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        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
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            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "whisperX-FastAPI",
    "version": ">= 0.3.1, < 0.6.0",
    "vendor": "pavelzbornik",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
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    "ai_score": 0
}