Chamilo LMS has Privilege Escalation via API User Role Modification_CVE-2026-40291

{
    "lastseen": "",
    "description": "Chamilo LMS is an open-source learning management system. In versions prior to 2.0.0-RC.3, an insecure direct object modification vulnerability in the PUT /api/users/{id} endpoint allows any authenticated user with ROLE_STUDENT to escalate their privileges to ROLE_ADMIN by modifying the roles field on their own user record. The API Platform security expression is_granted('EDIT', object) only verifies record ownership, and the roles field is included in the writable serialization group, enabling any user to set arbitrary roles such as ROLE_ADMIN. Successful exploitation grants full administrative control of the platform, including access to all courses, user data, grades, and administrative settings. This issue has been fixed in version 2.0.0-RC.3.",
    "published": "2026-04-14T21:37:55.490Z",
    "modified": "2026-04-14T21:37:55.490Z",
    "type": "cve",
    "title": "Chamilo LMS has Privilege Escalation via API User Role Modification",
    "source": "GitHub_M",
    "references": "https://github.com/chamilo/chamilo-lms/security/advisories/GHSA-7phx-w897-4c9x\nhttps://github.com/chamilo/chamilo-lms/releases/tag/v2.0.0-RC.3",
    "id": "CVE-2026-40291",
    "bulletinFamily": "",
    "cwe": [
        "CWE-269",
        "CWE-863"
    ],
    "cvelist": null,
    "sourceData": "chamilo chamilo-lms < 2.0-RC.3",
    "sourceHref": "",
    "cvss": {
        "score": 8.8,
        "severity": "HIGH",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
        "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": "chamilo-lms",
    "version": "< 2.0-RC.3",
    "vendor": "chamilo",
    "ai_description": "Privilege escalation vulnerability in Chamilo LMS via API user role modification",
    "ai_severity": "High",
    "ai_vendor": "Chamilo",
    "ai_product": "Chamilo LMS",
    "ai_version": "< 2.0.0-RC.3",
    "ai_score": 8.8
}