https://db.gcve.eu Contains only the most 10 recent entries. http://www.rssboard.org/rss-specification python-feedgen en Sat, 31 Oct 2026 15:22:24 +0000 https://db.gcve.eu/vuln/cve-2026-118264 <p><strong>Affected:</strong> labstack echo</p> <p>Echo is a Go web framework. From 4.0.0 until 4.16.1 and 5.4.1, Echo&#39;s Proxy middleware selects a raw tunnel from a client WebSocket upgrade request before verifying that the configured upstream accepted the upgrade. If the upstream rejects the upgrade with an ordinary keep-alive response, later HTTP requests on the connection are sent directly to that upstream without passing through Echo&#39;s router or route-specific middleware. This can bypass authentication or authorization enforced only by Echo routes, but requires an accessible proxy route, a cooperating rejected-upgrade response, and a target without independent upstream authorization. This issue is fixed in 4.16.1 and 5.4.1.</p> <p><strong>Affected:</strong> labstack echo</p> <p>Echo is a Go web framework. From 4.0.0 until 4.16.1 and 5.4.1, Echo&#39;s Proxy middleware selects a raw tunnel from a client WebSocket upgrade request before verifying that the configured upstream accepted the upgrade. If the upstream rejects the upgrade with an ordinary keep-alive response, later HTTP requests on the connection are sent directly to that upstream without passing through Echo&#39;s router or route-specific middleware. This can bypass authentication or authorization enforced only by Echo routes, but requires an accessible proxy route, a cooperating rejected-upgrade response, and a target without independent upstream authorization. This issue is fixed in 4.16.1 and 5.4.1.</p> https://db.gcve.eu/vuln/cve-2026-118264