ERPNext 16.16.0 – Stored XSS in POS customer section via unescaped template literals_CVE-2026-42840

{
    "lastseen": "",
    "description": "An authenticated user can persist arbitrary HTML/JavaScript in the email_id or mobile_no fields of a Customer record and trigger unescaped rendering in the Point of Sale (POS) interface for every operator who selects that customer.\nThis issue affects ERPNext: 16.16.0.",
    "published": "2026-06-03T17:35:04.126Z",
    "modified": "2026-06-03T17:35:04.126Z",
    "type": "cve",
    "title": "ERPNext 16.16.0 - Stored XSS in POS customer section via unescaped template literals",
    "source": "Fluid Attacks",
    "references": "https://fluidattacks.com/es/advisories/weeknd\nhttps://github.com/frappe/erpnext",
    "id": "CVE-2026-42840",
    "bulletinFamily": "",
    "cwe": [
        "CWE-79"
    ],
    "cvelist": null,
    "sourceData": "Frappe ERPNext 16.16.0",
    "sourceHref": "",
    "cvss": {
        "score": 5.1,
        "severity": "MEDIUM",
        "vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/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": "ERPNext",
    "version": "16.16.0",
    "vendor": "Frappe",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}