alf.io vulnerable to Arbitrary File Read and Exfil via simpleHttpClient Extension Script_CVE-2026-41412

{
    "lastseen": "",
    "description": "alf.io is an open source ticket reservation system for conferences, trade shows, workshops, and meetups. Prior to version 2.0-M5-2606, the alf.io extension sandbox injects a fully-functional HTTP client (`simpleHttpClient`) into every extension script's scope. The `postFileAndSaveResponse()` method accepts an arbitrary filesystem path as its `file` parameter and reads the file contents using `new FileInputStream(file)` with no path validation, directory restriction, or allowlist. A malicious extension script can read any file accessible to the JVM process user and exfiltrate it to an attacker-controlled server via HTTP POST. Version 2.0-M5-2606 patches the issue.",
    "published": "2026-06-02T22:51:36.358Z",
    "modified": "2026-06-02T22:51:36.358Z",
    "type": "cve",
    "title": "alf.io vulnerable to Arbitrary File Read and Exfil via simpleHttpClient Extension Script",
    "source": "GitHub_M",
    "references": "https://github.com/alfio-event/alf.io/security/advisories/GHSA-6m62-53cw-4373",
    "id": "CVE-2026-41412",
    "bulletinFamily": "",
    "cwe": [
        "CWE-22",
        "CWE-73"
    ],
    "cvelist": null,
    "sourceData": "alfio-event alf.io < 2.0-M5-2606",
    "sourceHref": "",
    "cvss": {
        "score": 4.9,
        "severity": "MEDIUM",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N",
        "version": "3.1"
    },
    "cvss2": [],
    "cvss3": {
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        "baseScore": 0,
        "baseSeverity": "",
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        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
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            "baseScore": 0,
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        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "alf.io",
    "version": "< 2.0-M5-2606",
    "vendor": "alfio-event",
    "ai_description": "",
    "ai_severity": "",
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    "ai_score": 0
}