Org.keycloak.services.resources.organizations: keycloak: unauthorized organization registration via improper invitation token validation_CVE-2026-1529

{
    "lastseen": "",
    "description": "A flaw was found in Keycloak. An attacker can exploit this vulnerability by modifying the organization ID and target email within a legitimate invitation token's JSON Web Token (JWT) payload. This lack of cryptographic signature verification allows the attacker to successfully self-register into an unauthorized organization, leading to unauthorized access.",
    "published": "2026-02-09T18:36:15.077Z",
    "modified": "2026-02-09T20:51:17.932Z",
    "type": "cve",
    "title": "Org.keycloak.services.resources.organizations: keycloak: unauthorized organization registration via improper invitation token validation",
    "source": "redhat",
    "references": "https://access.redhat.com/errata/RHSA-2026:2364\nhttps://access.redhat.com/security/cve/CVE-2026-1529\nhttps://bugzilla.redhat.com/show_bug.cgi?id=2433783",
    "id": "CVE-2026-1529",
    "bulletinFamily": "",
    "cwe": [
        "CWE-347"
    ],
    "cvelist": null,
    "sourceData": "",
    "sourceHref": "",
    "cvss": {
        "score": 8.1,
        "severity": "HIGH",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:L/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": "Red Hat build of Keycloak 26.2",
    "version": "26.2-15",
    "vendor": "Red Hat",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}