Audiobookshelf: Stored Cross-Site Scripting in Login Page Custom Message_CVE-2026-42887

{
    "lastseen": "",
    "description": "Audiobookshelf is a self-hosted audiobook and podcast server. Prior to 2.33.0, a stored cross-site scripting (XSS) vulnerability exists in the Login Page due to improper sanitization of the authLoginCustomMessage field of the /api/auth-settings endpoint. An attacker with administrative privileges can inject arbitrary HTML/JavaScript that will be rendered on the login page for all users. This vulnerability is fixed in 2.33.0.",
    "published": "2026-05-11T19:55:32.090Z",
    "modified": "2026-05-11T19:55:32.090Z",
    "type": "cve",
    "title": "Audiobookshelf: Stored Cross-Site Scripting in Login Page Custom Message",
    "source": "GitHub_M",
    "references": "https://github.com/advplyr/audiobookshelf/security/advisories/GHSA-cx29-ghq2-9cm4",
    "id": "CVE-2026-42887",
    "bulletinFamily": "",
    "cwe": [
        "CWE-79"
    ],
    "cvelist": null,
    "sourceData": "advplyr audiobookshelf < 2.33.0",
    "sourceHref": "",
    "cvss": {
        "score": 4.5,
        "severity": "MEDIUM",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:N/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": "audiobookshelf",
    "version": "< 2.33.0",
    "vendor": "advplyr",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}