CVE-2026-62963

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{"affected": [{"affectedData": [{"product": "centrifugo", "vendor": "centrifugal", "versions": [{"status": "affected", "version": "< 6.8.4"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Centrifugo is an open-source scalable real-time messaging server. Prior to 6.8.4, Centrifugo unidirectional WebSocket transport with uni_websocket.compression enabled enforced uni_websocket.message_size_limit against compressed wire-frame length in internal/websocket/conn.go advanceFrame, but ReadMessage used io.ReadAll after decompression without an output cap, allowing unauthenticated requests to /connection/uni_websocket to trigger large memory and CPU consumption. This issue is fixed in version 6.8.4."}, {"lang": "es", "value": "Centrifugo es un servidor de mensajer\u00eda en tiempo real escalable de c\u00f3digo abierto. Antes de la versi\u00f3n 6.8.4, el transporte WebSocket unidireccional de Centrifugo con uni_websocket.compression habilitado aplicaba uni_websocket.message_size_limit contra la longitud de la trama de cable comprimida en advanceFrame de internal/websocket/conn.go, pero ReadMessage usaba io.ReadAll despu\u00e9s de la descompresi\u00f3n sin un l\u00edmite de salida, permitiendo que las solicitudes no autenticadas a /connection/uni_websocket desencadenaran un gran consumo de memoria y CPU. Este problema est\u00e1 solucionado en la versi\u00f3n 6.8.4."}], "id": "CVE-2026-62963", "lastModified": "2026-10-24T20:10:00.137", "metrics": {"cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 8.7, "baseSeverity": "HIGH", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/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", "version": "4.0", "vulnAvailabilityImpact": "HIGH", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-62963", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-07-17T13:46:33.672302Z", "version": "2.0.3"}}]}, "published": "2026-07-16T20:16:47.533", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/centrifugal/centrifugo/commit/46d40e4ac3a5446c9745f8b219197166ae12a6e5"}, {"source": "security-advisories@github.com", "url": "https://github.com/centrifugal/centrifugo/pull/1162"}, {"source": "security-advisories@github.com", "url": "https://github.com/centrifugal/centrifugo/releases/tag/v6.8.4"}, {"source": "security-advisories@github.com", "url": "https://github.com/centrifugal/centrifugo/security/advisories/GHSA-q6mr-3g59-5m8x"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-409"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,6.8.4)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "centrifugo", "source": "cna", "vendor": "centrifugal"}, "product": "centrifugo", "vendor": "centrifugal"}], "created": "2026-07-16T20:30:05.156815+00:00", "updated": "2026-07-31T01:30:05.630046+00:00", "vendors": ["centrifugal", "centrifugal$PRODUCT$centrifugo"]}