https://vulnerability.circl.lu Contains only the most 10 recent entries. http://www.rssboard.org/rss-specification python-feedgen en Fri, 02 Oct 2026 08:21:13 +0000 https://vulnerability.circl.lu/vuln/cve-2026-9595 <p><strong>Affected:</strong> webpack-dev-server</p> <p>Impact: When a user-configured proxy on webpack-dev-server has a broad context (e.g. /) and ws: true, it also intercepts the dev server&#39;s own HMR WebSocket and forwards it to the proxy target. This leaks the browser&#39;s cookies and Origin header to the backend, bypasses the dev server&#39;s Host/Origin validation, and corrupts the HMR socket (both HMR and the proxy end up writing to the same socket).</p> <p>Patches: Fixed in webpack-dev-server@5.2.5.</p> <p>Workarounds: Scope user-defined proxy context to specific paths instead of /, or omit ws: true from the proxy entry when WebSocket forwarding is not required.</p> <p><strong>Affected:</strong> webpack-dev-server</p> <p>Impact: When a user-configured proxy on webpack-dev-server has a broad context (e.g. /) and ws: true, it also intercepts the dev server&#39;s own HMR WebSocket and forwards it to the proxy target. This leaks the browser&#39;s cookies and Origin header to the backend, bypasses the dev server&#39;s Host/Origin validation, and corrupts the HMR socket (both HMR and the proxy end up writing to the same socket).</p> <p>Patches: Fixed in webpack-dev-server@5.2.5.</p> <p>Workarounds: Scope user-defined proxy context to specific paths instead of /, or omit ws: true from the proxy entry when WebSocket forwarding is not required.</p> https://vulnerability.circl.lu/vuln/cve-2026-9595