Katalyst Koi: Session cookies can be replayed after user logout_CVE-2026-44511

{
    "lastseen": "",
    "description": "Katalyst Koi is a framework for building Rails admin functionality. Prior to 4.20.0 and 5.6.0, admin session cookies were not invalidated when an admin user logged out. An attacker with access to a valid admin session cookie could continue to access admin functionality after logout, until the cookie expired or session secrets were rotated. This vulnerability is fixed in 4.20.0 and 5.6.0.",
    "published": "2026-05-14T16:17:29.187Z",
    "modified": "2026-05-14T16:17:29.187Z",
    "type": "cve",
    "title": "Katalyst Koi: Session cookies can be replayed after user logout",
    "source": "GitHub_M",
    "references": "https://github.com/katalyst/koi/security/advisories/GHSA-4cx3-3c38-j9vv",
    "id": "CVE-2026-44511",
    "bulletinFamily": "",
    "cwe": [
        "CWE-613"
    ],
    "cvelist": null,
    "sourceData": "katalyst koi < 4.20.0\nkatalyst koi >= 5.0.0 <= 5.6.0",
    "sourceHref": "",
    "cvss": {
        "score": 7.4,
        "severity": "HIGH",
        "vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/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": "koi",
    "version": "< 4.20.0",
    "vendor": "katalyst",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}