{"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"}}]}}