CVE-2026-50636

{"id": "CVE-2026-50636", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-50636", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2026-06-09T18:58:04.976452Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "disclosure@vulncheck.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.8, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 2.8}], "cvssMetricV40": [{"type": "Secondary", "source": "disclosure@vulncheck.com", "cvssData": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 8.7, "Automatable": "NOT_DEFINED", "attackVector": "NETWORK", "baseSeverity": "HIGH", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "integrityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "availabilityRequirement": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "subConfidentialityImpact": "NONE", "vulnConfidentialityImpact": "HIGH", "confidentialityRequirement": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED"}}]}, "affected": [{"source": "disclosure@vulncheck.com", "affectedData": [{"vendor": "LimeSurvey", "product": "LimeSurvey", "versions": [{"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "7.0"}, {"status": "unaffected", "version": "7.0.1", "versionType": "custom"}], "defaultStatus": "unknown"}]}], "published": "2026-06-09T18:17:10.620", "references": [{"url": "https://github.com/LimeSurvey/LimeSurvey/pull/5031", "source": "disclosure@vulncheck.com"}, {"url": "https://www.limesurvey.org/", "source": "disclosure@vulncheck.com"}, {"url": "https://www.vulncheck.com/advisories/limesurvey-remotecontrol-invite-participants-remind-participants-sql-injection", "source": "disclosure@vulncheck.com"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "disclosure@vulncheck.com", "description": [{"lang": "en", "value": "CWE-89"}]}], "descriptions": [{"lang": "en", "value": "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."}, {"lang": "es", "value": "Los m\u00e9todos de la API RemoteControl invite_participants y remind_participants pasan un array de ID de token proporcionado por el llamador a TokenDynamic::findUninvited(), que concatena los valores directamente en una cl\u00e1usula SQL tid IN ('...') sin parametrizaci\u00f3n o validaci\u00f3n de entrada. Un atacante remoto y autenticado que posee el permiso tokens/update en una encuesta puede inyectar un elemento de array manipulado para realizar una inyecci\u00f3n SQL. Debido a que LimeSurvey configura su conexi\u00f3n PDO con sentencias preparadas emuladas (emulatePrepare = true) y no deshabilita las multi-sentencias de MySQL, la inyecci\u00f3n soporta consultas apiladas: el atacante puede a\u00f1adir sentencias adicionales arbitrarias (INSERT/UPDATE/DELETE/DROP/CREATE) despu\u00e9s del SELECT original. Esto permite tanto la lectura arbitraria de cualquier dato en la base de datos, como hashes de contrase\u00f1a bcrypt de administrador (lime_users), PII de respuestas de encuestas, registros de sesi\u00f3n y configuraciones globales, todo recuperable a trav\u00e9s de un or\u00e1culo ciego basado en tiempo SLEEP(), como la escritura/destrucci\u00f3n arbitraria de esos datos, incluyendo la sobrescritura directa del hash de contrase\u00f1a del administrador para una toma de control de cuenta inmediata o la eliminaci\u00f3n/truncamiento de tablas. Las lecturas y escrituras se extienden a cualquier esquema al que el usuario de la base de datos de la aplicaci\u00f3n pueda acceder. La interfaz RemoteControl (RPCInterface = json/xml) debe estar habilitada, lo cual no es la configuraci\u00f3n predeterminada."}], "lastModified": "2026-07-23T08:10:00.137", "sourceIdentifier": "disclosure@vulncheck.com"}