Kirby: System API endpoint leaks license data and installed version to authenticated users_CVE-2026-42051

{
    "lastseen": "",
    "description": "Kirby is an open-source content management system. Prior to versions 4.9.0 and 5.4.0, the system API endpoint leaks license data and installed version to authenticated users. This issue has been patched in versions 4.9.0 and 5.4.0.",
    "published": "2026-05-09T03:37:42.707Z",
    "modified": "2026-05-09T03:37:42.707Z",
    "type": "cve",
    "title": "Kirby: System API endpoint leaks license data and installed version to authenticated users",
    "source": "GitHub_M",
    "references": "https://github.com/getkirby/kirby/security/advisories/GHSA-x68m-c7jf-2572\nhttps://github.com/getkirby/kirby/releases/tag/4.9.0\nhttps://github.com/getkirby/kirby/releases/tag/5.4.0",
    "id": "CVE-2026-42051",
    "bulletinFamily": "",
    "cwe": [
        "CWE-862"
    ],
    "cvelist": null,
    "sourceData": "getkirby kirby < 4.9.0\ngetkirby kirby >= 5.0.0, < 5.4.0",
    "sourceHref": "",
    "cvss": {
        "score": 5.3,
        "severity": "MEDIUM",
        "vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/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": "kirby",
    "version": "< 4.9.0",
    "vendor": "getkirby",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}