HAXcms: Mass Token Exfiltration and Cross-Tenant Hijack_CVE-2026-46511

{
    "lastseen": "",
    "description": "HAX CMS helps manage microsite universe with PHP or NodeJs backends. Prior to version 26.0.0, an attack chain utilizing Stored XSS alongside dynamic token exposure in the `/system/api/connectionSettings` endpoint allows an authenticated attacker to perform a complete cross-tenant account takeover. The API dynamically leaks the active session's authentication tokens (including the `jwt`, `user_token`, `site_token`, and `appstore_token`) into a global JavaScript variable (`window.appSettings`). An attacker can exploit the XSS vulnerability to force a victim's browser to silently fetch their specific connection settings, extract the tokens, and exfiltrate them to an attacker-controlled webhook. Version 26.0.0 patches the issue.",
    "published": "2026-06-05T18:32:55.498Z",
    "modified": "2026-06-05T18:32:55.498Z",
    "type": "cve",
    "title": "HAXcms: Mass Token Exfiltration and Cross-Tenant Hijack",
    "source": "GitHub_M",
    "references": "https://github.com/haxtheweb/issues/security/advisories/GHSA-x3x5-7h4h-gwxg",
    "id": "CVE-2026-46511",
    "bulletinFamily": "",
    "cwe": [
        "CWE-79",
        "CWE-522",
        "CWE-922"
    ],
    "cvelist": null,
    "sourceData": "haxtheweb haxcms-nodejs < 26.0.0\nhaxtheweb haxcms-php < 26.0.0",
    "sourceHref": "",
    "cvss": {
        "score": 8.7,
        "severity": "HIGH",
        "vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/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": "haxcms-nodejs",
    "version": "< 26.0.0",
    "vendor": "haxtheweb",
    "ai_description": "Stored XSS and dynamic token exposure allow for cross-tenant account takeover",
    "ai_severity": "High",
    "ai_vendor": "haxtheweb",
    "ai_product": "HAXcms",
    "ai_version": "< 26.0.0",
    "ai_score": 8.7
}