{"api_version":"1","generated_at":"2026-10-29T15:10:07+00:00","cve":"CVE-2026-118262","urls":{"html":"https://cve.report/CVE-2026-118262","api":"https://cve.report/api/cve/CVE-2026-118262.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-118262","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-118262"},"summary":{"title":"Echo: WebSocket proxy can retain connections and handlers after client disconnect","description":"Echo is a Go web framework. From 4.15.0 until 4.16.1 and 5.4.1, Echo's Proxy middleware can retain a handler, copy goroutines, and network connections after a WebSocket client disconnects when the upstream keeps its connection open. The raw proxy waits for both copy directions without reliably closing the peer connection when one direction ends, including when a rejected upgrade response uses HTTP keep-alive. Repeated connections can accumulate resources and cause denial of service, depending on proxy-route accessibility, upstream behavior, and connection deadlines. 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From 4.15.0 until 4.16.1 and 5.4.1, Echo's Proxy middleware can retain a handler, copy goroutines, and network connections after a WebSocket client disconnects when the upstream keeps its connection open. The raw proxy waits for both copy directions without reliably closing the peer connection when one direction ends, including when a rejected upgrade response uses HTTP keep-alive. Repeated connections can accumulate resources and cause denial of service, depending on proxy-route accessibility, upstream behavior, and connection deadlines. This issue is fixed in 4.16.1 and 5.4.1.","Type":"Description","Title":"Echo: WebSocket proxy can retain connections and handlers after "}]}}}