{"id":"EUVD-2026-85575","revision":"99a71d4ced514ccc9345fae3ccfc7933","records":[{"revision":"99a71d4ced514ccc9345fae3ccfc7933","observedAt":"2026-11-07T15:23:01.272+00:00","statement":{"source":"euvd","id":"EUVD-2026-85575","aliases":["CVE-2026-86065","GHSA-4fwh-wrm6-97xm"],"title":"Klever-Go is the Go implementation of the Klever blockchain protocol. Prior to 1.7.20, the default-open GET /subscribe endpoint in network/api/websocket/routes.go accepts unauthenticated WebSocket clients with permissive origin handling, do…","description":"Klever-Go is the Go implementation of the Klever blockchain protocol. Prior to 1.7.20, the default-open GET /subscribe endpoint in network/api/websocket/routes.go accepts unauthenticated WebSocket clients with permissive origin handling, does not call SetReadLimit to bound message size, and has no live-connection cap. SocketHub.HandleClientInsertion also accepts an unbounded address list that grows addressSubscription, and client.loopIn continues reading without a size limit, allowing one client to grow subscription maps or many clients to retain goroutines, buffered channels, and descriptors. The global HTTP request throttler does not count upgraded live WebSocket connections. Because the REST and WebSocket API runs in the node process, memory or scheduler exhaustion can crash the node and interrupt P2P and consensus participation. This issue is fixed in version 1.7.20.","state":0,"publishedAt":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5,"severity":null}],"references":["https://github.com/klever-io/klever-go/security/advisories/GHSA-4fwh-wrm6-97xm","https://github.com/klever-io/klever-go/pull/76","https://github.com/klever-io/klever-go/commit/b8af922e749ec1fa7451b2c6e7c9f634d8603be2","https://github.com/klever-io/klever-go/releases/tag/v1.7.20"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-85575","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Sep 23, 2026, 7:15:24 PM","dateUpdated":"Sep 29, 2026, 2:10:29 AM"},"relatedAdvisories":[],"note":"EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON."},"key":"euvd:EUVD-2026-85575","identifiers":["EUVD-2026-85575","CVE-2026-86065","GHSA-4fwh-wrm6-97xm"]},"retained":false,"historicalAffected":[]}],"coverage":[]}