TinyWeb CGI Command Injection_CVE-2026-22781

{
    "lastseen": "",
    "description": "TinyWeb is a web server (HTTP, HTTPS) written in Delphi for Win32. TinyWeb HTTP Server before version 1.98 is vulnerable to OS command injection via CGI ISINDEX-style query parameters. The query parameters are passed as command-line arguments to the CGI executable via Windows CreateProcess(). An unauthenticated remote attacker can execute arbitrary commands on the server by injecting Windows shell metacharacters into HTTP requests. This vulnerability is fixed in 1.98.",
    "published": "2026-01-12T18:23:00.512Z",
    "modified": "2026-01-12T18:23:00.512Z",
    "type": "cve",
    "title": "TinyWeb CGI Command Injection",
    "source": "GitHub_M",
    "references": "https://github.com/maximmasiutin/TinyWeb/security/advisories/GHSA-m779-84h5-72q2\nhttps://github.com/maximmasiutin/TinyWeb/commit/876b7e2887f4ea5be3e18bb2af7313f23a283c96\nhttps://www.masiutin.net/tinyweb-cve-2025-cgi-command-injection.html",
    "id": "CVE-2026-22781",
    "bulletinFamily": "",
    "cwe": [
        "CWE-78"
    ],
    "cvelist": null,
    "sourceData": "maximmasiutin TinyWeb < 1.98",
    "sourceHref": "",
    "cvss": {
        "score": 10,
        "severity": "CRITICAL",
        "vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/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": "TinyWeb",
    "version": "< 1.98",
    "vendor": "maximmasiutin",
    "ai_description": "TinyWeb HTTP Server is vulnerable to OS command injection via CGI ISINDEX-style query parameters, allowing an unauthenticated remote attacker to execute arbitrary commands on the server.",
    "ai_severity": "Critical",
    "ai_vendor": "maximmasiutin",
    "ai_product": "TinyWeb HTTP Server",
    "ai_version": "< 1.98",
    "ai_score": 10
}