CVE-2026-75110

{"id": "CVE-2026-75110", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-75110", "role": "CISA Coordinator", "options": [{"exploitation": "poc"}, {"automatable": "yes"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2026-08-18T12:48:39.747053Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "disclosure@vulncheck.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 9.8, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 3.9}], "cvssMetricV40": [{"type": "Secondary", "source": "disclosure@vulncheck.com", "cvssData": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 9.3, "Automatable": "NOT_DEFINED", "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/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": "NONE", "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": [{"repo": "https://github.com/MemTensor/MemOS", "vendor": "MemTensor", "product": "MemOS", "versions": [{"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "2.0.30"}], "packageURL": "pkg:pypi/MemoryOS", "defaultStatus": "unaffected"}]}], "published": "2026-08-17T21:16:50.043", "references": [{"url": "https://github.com/MemTensor/MemOS", "source": "disclosure@vulncheck.com"}, {"url": "https://github.com/MemTensor/MemOS/blob/main/src/memos/api/middleware/auth.py", "source": "disclosure@vulncheck.com"}, {"url": "https://github.com/MemTensor/MemOS/issues/2259", "source": "disclosure@vulncheck.com"}, {"url": "https://www.vulncheck.com/advisories/memos-authentication-bypass-via-unset-internal-service-secret", "source": "disclosure@vulncheck.com"}, {"url": "https://github.com/MemTensor/MemOS/issues/2259", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "disclosure@vulncheck.com", "description": [{"lang": "en", "value": "CWE-697"}]}], "descriptions": [{"lang": "en", "value": "MemOS is a memory operating system for LLMs and AI agents. In deployments where authentication is enabled (AUTH_ENABLED=true) but the undocumented, defaultless INTERNAL_SERVICE_SECRET environment variable is unset, the is_internal_request() check in src/memos/api/middleware/auth.py fails open: os.getenv(\"INTERNAL_SERVICE_SECRET\") returns None and a request omitting the X-Internal-Service header also yields None, so the comparison None == None evaluates true. The request is then treated as a trusted internal principal and granted scopes: [\"all\"]. As a result, an unauthenticated remote attacker can reach the admin API-key management endpoints to mint API keys for any user, enumerate keys, revoke keys, and generate a master key for persistent privileged access, as well as all data endpoints."}, {"lang": "es", "value": "MemOS es un sistema operativo de memoria para LLMs y agentes de IA. En despliegues donde la autenticaci\u00f3n est\u00e1 habilitada (AUTH_ENABLED=true) pero la variable de entorno INTERNAL_SERVICE_SECRET, no documentada y sin valor por defecto, no est\u00e1 configurada, la verificaci\u00f3n is_internal_request() en src/memos/api/middleware/auth.py falla abierta: os.getenv(\u201cINTERNAL_SERVICE_SECRET\u201d) devuelve None y una solicitud que omite el encabezado X-Internal-Service tambi\u00e9n produce None, por lo que la comparaci\u00f3n None == None se eval\u00faa como verdadera. La solicitud es entonces tratada como un principal interno de confianza y se le otorgan los alcances: [\u201call\u201d]. Como resultado, un atacante remoto no autenticado puede acceder a los puntos finales de gesti\u00f3n de claves API de administrador para acu\u00f1ar claves API para cualquier usuario, enumerar claves, revocar claves y generar una clave maestra para acceso privilegiado persistente, as\u00ed como a todos los puntos finales de datos."}], "lastModified": "2026-10-23T16:10:00.313", "sourceIdentifier": "disclosure@vulncheck.com"}