Arcane: Unauthenticated reflected XSS via SVG color parameter in /api/app-images/logo enables admin account takeover_CVE-2026-45627

{
    "lastseen": "",
    "description": "Arcane is an interface for managing Docker containers, images, networks, and volumes. Prior to 1.19.0, the unauthenticated GET /api/app-images/logo endpoint reflects a user-supplied color query parameter into the body of an SVG document via strings.ReplaceAll with no escaping. The substitution lands inside a <style> element of the embedded logo.svg, allowing an attacker to close the style block and inject executable <script> content. Because the response is served as image/svg+xml and Arcane sets no Content-Security-Policy or X-Content-Type-Options headers, navigating a logged-in admin victim to a crafted URL executes attacker-controlled JavaScript in Arcane's origin and rides the victim's HttpOnly JWT cookie to fully compromise the admin account. This vulnerability is fixed in 1.19.0.",
    "published": "2026-05-29T17:08:53.797Z",
    "modified": "2026-05-29T17:31:14.391Z",
    "type": "cve",
    "title": "Arcane: Unauthenticated reflected XSS via SVG color parameter in /api/app-images/logo enables admin account takeover",
    "source": "GitHub_M",
    "references": "https://github.com/getarcaneapp/arcane/security/advisories/GHSA-q2pj-8v84-9mh5",
    "id": "CVE-2026-45627",
    "bulletinFamily": "",
    "cwe": [
        "CWE-79"
    ],
    "cvelist": null,
    "sourceData": "getarcaneapp arcane < 1.19.0",
    "sourceHref": "",
    "cvss": {
        "score": 8.2,
        "severity": "HIGH",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N",
        "version": "3.1"
    },
    "cvss2": [],
    "cvss3": {
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        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
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        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
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            "baseScore": 0,
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        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "arcane",
    "version": "< 1.19.0",
    "vendor": "getarcaneapp",
    "ai_description": "",
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    "ai_score": 0
}