CVE-2026-48106

{"id": "CVE-2026-48106", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-48106", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-08-26T17:47:11.822451Z"}}], "cvssMetricV40": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 8.3, "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:N/VI:H/VA:N/SC:N/SI:H/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": "HIGH", "vulnIntegrityImpact": "HIGH", "integrityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "availabilityRequirement": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "subConfidentialityImpact": "NONE", "vulnConfidentialityImpact": "NONE", "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": "security-advisories@github.com", "affectedData": [{"vendor": "Basekick-Labs", "product": "arc", "versions": [{"status": "affected", "version": "< 2026.06.1"}]}]}], "published": "2026-08-21T23:16:25.360", "references": [{"url": "https://github.com/Basekick-Labs/arc/security/advisories/GHSA-wfgr-8x84-22q7", "source": "security-advisories@github.com"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-306"}, {"lang": "en", "value": "CWE-345"}, {"lang": "en", "value": "CWE-924"}]}], "descriptions": [{"lang": "en", "value": "Arc is an open, SQL-native time-series database for telemetry. Prior to version 26.06.1, Arc Enterprise's cluster replication receiver at `internal/cluster/replication/receiver.go` validates only the wire-format envelope (length, opcode) of inbound messages. The `MsgReplicateSync` payload itself is accepted without any application-layer authentication \u2014 no HMAC, no signature, no per-message nonce. The replication stream is protected at the transport layer by TLS / mTLS, but there is no protection against application-layer message tampering or replay once a peer is on the cluster network. This is fixed in 2026.06.1. Some workarounds are available. Restrict cluster network access to known-trusted peers via strict firewall rules, audit replication logs for unexpected `MsgReplicateSync` traffic, and/or disable cluster mode until the fix is available."}, {"lang": "es", "value": "Arc es una base de datos de series temporales abierta, nativa de SQL, para telemetr\u00eda. Antes de la versi\u00f3n 26.06.1, el receptor de replicaci\u00f3n de cl\u00faster de Arc Enterprise en 'internal/cluster/replication/receiver.go' valida solo el sobre en formato de cable (longitud, c\u00f3digo de operaci\u00f3n) de los mensajes entrantes. La carga \u00fatil 'MsgReplicateSync' en s\u00ed misma es aceptada sin ninguna autenticaci\u00f3n de capa de aplicaci\u00f3n - sin HMAC, sin firma, sin nonce por mensaje. El flujo de replicaci\u00f3n est\u00e1 protegido en la capa de transporte por TLS / mTLS, pero no hay protecci\u00f3n contra la manipulaci\u00f3n o la repetici\u00f3n de mensajes en la capa de aplicaci\u00f3n una vez que un par est\u00e1 en la red del cl\u00faster. Esto se corrige en 2026.06.1. Algunas soluciones provisionales est\u00e1n disponibles. Restrinja el acceso a la red del cl\u00faster a pares de confianza conocidos mediante reglas estrictas de cortafuegos, audite los registros de replicaci\u00f3n en busca de tr\u00e1fico 'MsgReplicateSync' inesperado, y/o deshabilite el modo de cl\u00faster hasta que la correcci\u00f3n est\u00e9 disponible."}], "lastModified": "2026-10-12T16:10:00.220", "sourceIdentifier": "security-advisories@github.com"}