LimeSurvey RemoteControl invite_participants/remind_participants SQL Injection_CVE-2026-50636

{
    "lastseen": "",
    "description": "The RemoteControl API methods invite_participants and remind_participants pass a caller-supplied token-ID array into TokenDynamic::findUninvited(), which concatenates the values directly into a tid IN ('...') SQL clause without parameterization or input validation. A remote, authenticated attacker holding the tokens/update permission on a survey can inject a crafted array element to perform SQL injection. Because LimeSurvey configures its PDO connection with emulated prepared statements (emulatePrepare = true) and does not disable MySQL multi-statements, the injection supports stacked queries: the attacker can append arbitrary additional statements (INSERT/UPDATE/DELETE/DROP/CREATE) after the original SELECT. This permits both arbitrary read of any data in the database, such as administrator bcrypt password hashes (lime_users), survey response PII, session records, and global settings, all recoverable via a SLEEP() time-based blind oracle, and arbitrary write/destruction of that data, including directly overwriting the administrator password hash for immediate account takeover or dropping/truncating tables. Reads and writes extend to any schema the application's database user can access. The RemoteControl interface (RPCInterface = json/xml) must be enabled, which is not the default.",
    "published": "2026-06-09T17:34:31.751Z",
    "modified": "2026-06-09T17:34:31.751Z",
    "type": "cve",
    "title": "LimeSurvey RemoteControl invite_participants/remind_participants SQL Injection",
    "source": "VulnCheck",
    "references": "https://github.com/LimeSurvey/LimeSurvey/pull/5031\nhttps://www.limesurvey.org/\nhttps://www.vulncheck.com/advisories/limesurvey-remotecontrol-invite-participants-remind-participants-sql-injection",
    "id": "CVE-2026-50636",
    "bulletinFamily": "",
    "cwe": [
        "CWE-89"
    ],
    "cvelist": null,
    "sourceData": "LimeSurvey LimeSurvey 0",
    "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": "LimeSurvey",
    "version": "0",
    "vendor": "LimeSurvey",
    "ai_description": "SQL injection vulnerability in LimeSurvey RemoteControl API methods invite_participants and remind_participants, allowing arbitrary read and write access to the database.",
    "ai_severity": "High",
    "ai_vendor": "LimeSurvey",
    "ai_product": "LimeSurvey",
    "ai_version": "0",
    "ai_score": 8.8
}