HaxCMS has a stored Cross-Site Scripting (XSS) bypass in saveNode endpoint_CVE-2026-48527

{
    "lastseen": "",
    "description": "HAX CMS helps manage microsite universe with PHP or NodeJs backends. Versions up to and including 26.0.0 are affected by a stored cross-site scripting (XSS) vulnerability in the `/system/api/saveNode` endpoint. An authenticated user with a permission to edit pages can bypass the HTML sanitizer by injecting an event handler attribute without whitespace before the attribute name. @haxtheweb/haxcms-nodejs 26.0.1 and haxcms-php 26.0.2 patch the issue.",
    "published": "2026-05-29T12:26:07.972Z",
    "modified": "2026-05-29T13:02:50.194Z",
    "type": "cve",
    "title": "HaxCMS has a stored Cross-Site Scripting (XSS) bypass in saveNode endpoint",
    "source": "GitHub_M",
    "references": "https://github.com/haxtheweb/issues/security/advisories/GHSA-g2g8-95qg-v35h",
    "id": "CVE-2026-48527",
    "bulletinFamily": "",
    "cwe": [
        "CWE-79"
    ],
    "cvelist": null,
    "sourceData": "haxtheweb haxcms-nodejs < 26.0.1\nhaxtheweb haxcms-php < 26.0.2",
    "sourceHref": "",
    "cvss": {
        "score": 8.7,
        "severity": "HIGH",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N",
        "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": "haxcms-nodejs",
    "version": "< 26.0.1",
    "vendor": "haxtheweb",
    "ai_description": "Stored cross-site scripting (XSS) vulnerability in the `/system/api/saveNode` endpoint",
    "ai_severity": "High",
    "ai_vendor": "haxtheweb",
    "ai_product": "HaxCMS",
    "ai_version": "< 26.0.1, < 26.0.2",
    "ai_score": 8.7
}