{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-62963", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-07-14T22:32:17.732Z", "datePublished": "2026-07-16T19:34:48.882Z", "dateUpdated": "2026-07-17T13:46:40.652Z"}, "containers": {"cna": {"title": "Centrifugo: Decompression bomb DoS via permessage-deflate in unidirectional WebSocket transport", "problemTypes": [{"descriptions": [{"cweId": "CWE-409", "lang": "en", "description": "CWE-409: Improper Handling of Highly Compressed Data (Data Amplification)", "type": "CWE"}]}], "metrics": [{"cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "baseScore": 8.7, "baseSeverity": "HIGH", "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", "version": "4.0"}}], "references": [{"name": "https://github.com/centrifugal/centrifugo/security/advisories/GHSA-q6mr-3g59-5m8x", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/centrifugal/centrifugo/security/advisories/GHSA-q6mr-3g59-5m8x"}, {"name": "https://github.com/centrifugal/centrifugo/pull/1162", "tags": ["x_refsource_MISC"], "url": "https://github.com/centrifugal/centrifugo/pull/1162"}, {"name": "https://github.com/centrifugal/centrifugo/commit/46d40e4ac3a5446c9745f8b219197166ae12a6e5", "tags": ["x_refsource_MISC"], "url": "https://github.com/centrifugal/centrifugo/commit/46d40e4ac3a5446c9745f8b219197166ae12a6e5"}, {"name": "https://github.com/centrifugal/centrifugo/releases/tag/v6.8.4", "tags": ["x_refsource_MISC"], "url": "https://github.com/centrifugal/centrifugo/releases/tag/v6.8.4"}], "affected": [{"vendor": "centrifugal", "product": "centrifugo", "versions": [{"version": "< 6.8.4", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-07-16T19:34:48.882Z"}, "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."}], "source": {"advisory": "GHSA-q6mr-3g59-5m8x", "discovery": "UNKNOWN"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-07-17T13:46:33.672302Z", "id": "CVE-2026-62963", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-07-17T13:46:40.652Z"}}]}}

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{}

{}

{"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": "2026-07-16T20:30:05.156843+00:00", "vendors": ["centrifugal", "centrifugal$PRODUCT$centrifugo"]}