Zip Slip in MarkUs config upload allowing RCE_CVE-2026-25057

{
    "lastseen": "",
    "description": "MarkUs is a web application for the submission and grading of student assignments. Prior to 2.9.1, instructors are able to upload a zip file to create an assignment from an exported configuration (courses/<:course_id>/assignments/upload_config_files). The uploaded zip file entry names are used to create paths to write files to disk without checking these paths. This vulnerability is fixed in 2.9.1.",
    "published": "2026-02-09T19:16:55.980Z",
    "modified": "2026-02-09T19:16:55.980Z",
    "type": "cve",
    "title": "Zip Slip in MarkUs config upload allowing RCE",
    "source": "GitHub_M",
    "references": "https://github.com/MarkUsProject/Markus/security/advisories/GHSA-mccg-p332-252h\nhttps://github.com/MarkUsProject/Markus/commit/0ca002a1f0071c7a00dbb2ed34fede57323c5dc7\nhttps://github.com/MarkUsProject/Markus/releases/tag/v2.9.1",
    "id": "CVE-2026-25057",
    "bulletinFamily": "",
    "cwe": [
        "CWE-23"
    ],
    "cvelist": null,
    "sourceData": "MarkUsProject Markus < 2.9.1",
    "sourceHref": "",
    "cvss": {
        "score": 9.1,
        "severity": "CRITICAL",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H",
        "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": "Markus",
    "version": "< 2.9.1",
    "vendor": "MarkUsProject",
    "ai_description": "Zip Slip vulnerability in MarkUs config upload allowing Remote Code Execution (RCE)",
    "ai_severity": "Critical",
    "ai_vendor": "MarkUsProject",
    "ai_product": "Markus",
    "ai_version": "< 2.9.1",
    "ai_score": 9.1
}