Papermark 0.22.0 – CORS Misconfiguration in Viewer Upload Endpoint_CVE-2026-57957

{
    "lastseen": "",
    "description": "Papermark through 0.22.0 contains a cross-origin resource sharing (CORS) misconfiguration vulnerability that allows unauthenticated remote attackers to perform credentialed cross-origin requests by exploiting the TUS-based viewer upload endpoint reflecting arbitrary request Origins with Access-Control-Allow-Credentials set to true. Attackers can lure authenticated victims to malicious pages that silently issue credentialed cross-origin requests to upload arbitrary files into victim datarooms and read credentialed responses.",
    "published": "2026-06-29T17:23:10.419Z",
    "modified": "2026-06-29T17:23:10.419Z",
    "type": "cve",
    "title": "Papermark 0.22.0 - CORS Misconfiguration in Viewer Upload Endpoint",
    "source": "VulnCheck",
    "references": "https://github.com/papermark/papermark/issues/2178\nhttps://github.com/AstoKr/papermark/pull/1\nhttps://www.vulncheck.com/advisories/papermark-cors-misconfiguration-in-viewer-upload-endpoint",
    "id": "CVE-2026-57957",
    "bulletinFamily": "",
    "cwe": [
        "CWE-942"
    ],
    "cvelist": null,
    "sourceData": "papermark papermark 0",
    "sourceHref": "",
    "cvss": {
        "score": 2.3,
        "severity": "LOW",
        "vector": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:L/SA:N",
        "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": "papermark",
    "version": "0",
    "vendor": "papermark",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}