CVE Explorer
CVE-2026-62963
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 vers
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"product":"centrifugo","vendor":"centrifugal","versions":[{"status":"affected","version":"< 6.8.4"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:9c22f9a7ce52dc33385cfd12df688d35ab88c158f503adc3a53da19ff5b4e4e4 · sha256:00e7999666e2bd94… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":8.7,"baseSeverity":"HIGH","privilegesRequired":"NONE","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","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","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE"},"metric_type":"cvssV4_0"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:9c22f9a7ce52dc33385cfd12df688d35ab88c158f503adc3a53da19ff5b4e4e4 · sha256:00e7999666e2bd94… · /containers/cna/metrics/0/cvssV4_0
CWE assertions
1 source assertion{"cweId":"CWE-409","description":"CWE-409: Improper Handling of Highly Compressed Data (Data Amplification)","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:9c22f9a7ce52dc33385cfd12df688d35ab88c158f503adc3a53da19ff5b4e4e4 · sha256:00e7999666e2bd94… · /containers/cna/problemTypes/0/descriptions/0
Source references
4 source assertions{"name":"https://github.com/centrifugal/centrifugo/commit/46d40e4ac3a5446c9745f8b219197166ae12a6e5","tags":["x_refsource_MISC"],"url":"https://github.com/centrifugal/centrifugo/commit/46d40e4ac3a5446c9745f8b219197166ae12a6e5"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:9c22f9a7ce52dc33385cfd12df688d35ab88c158f503adc3a53da19ff5b4e4e4 · sha256:00e7999666e2bd94… · /containers/cna/references/2
{"name":"https://github.com/centrifugal/centrifugo/pull/1162","tags":["x_refsource_MISC"],"url":"https://github.com/centrifugal/centrifugo/pull/1162"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:9c22f9a7ce52dc33385cfd12df688d35ab88c158f503adc3a53da19ff5b4e4e4 · sha256:00e7999666e2bd94… · /containers/cna/references/1
{"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"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:9c22f9a7ce52dc33385cfd12df688d35ab88c158f503adc3a53da19ff5b4e4e4 · sha256:00e7999666e2bd94… · /containers/cna/references/3
{"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"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:9c22f9a7ce52dc33385cfd12df688d35ab88c158f503adc3a53da19ff5b4e4e4 · sha256:00e7999666e2bd94… · /containers/cna/references/0
Attribution and limitations
- CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →
Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.