Kestra task inputFiles accepts traversal filenames for worker file writes_CVE-2026-48129

{
    "lastseen": "",
    "description": "Kestra is an open-source, event-driven orchestration platform. Prior to versions 1.3.19, 1.2.19, 1.1.19, and 1.0.43, Kestra task `inputFiles` writes rendered file names directly under the task working directory. When a flow forwards untrusted execution or webhook data into an `inputFiles` file name, a caller can use `../` path segments to create or overwrite files outside that task working directory on the worker filesystem. Versions 1.3.19, 1.2.19, 1.1.19, and 1.0.43 patch the issue.",
    "published": "2026-06-19T20:16:24.043Z",
    "modified": "2026-06-19T20:16:24.043Z",
    "type": "cve",
    "title": "Kestra task inputFiles accepts traversal filenames for worker file writes",
    "source": "GitHub_M",
    "references": "https://github.com/kestra-io/kestra/security/advisories/GHSA-q3fw-mvgv-pjr2",
    "id": "CVE-2026-48129",
    "bulletinFamily": "",
    "cwe": [
        "CWE-22"
    ],
    "cvelist": null,
    "sourceData": "kestra-io kestra < 1.0.43\nkestra-io kestra >= 1.1.0, < 1.1.19\nkestra-io kestra >= 1.2.0, < 1.2.19\nkestra-io kestra >= 1.3.0, < 1.3.19",
    "sourceHref": "",
    "cvss": {
        "score": 6.5,
        "severity": "MEDIUM",
        "vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:L",
        "version": "3.1"
    },
    "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": "kestra",
    "version": "< 1.0.43",
    "vendor": "kestra-io",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}