CVE Watch29 oct 2026

CVE-2026-118262

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 c

CVSS

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Sin CVSS

EPSS

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KEV

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Exploit Today

0-100

Publicado: 28 oct 2026 · Última mod.: 29 oct 2026 · CWE-772

EPSS · 30d

Sin historial EPSS suficiente todavía.

Descripción técnica

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. This issue is fixed in 4.16.1 and 5.4.1.

Referencias oficiales

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