https://vulnerability.circl.lu Contains only the most 10 recent entries. http://www.rssboard.org/rss-specification python-feedgen en Tue, 06 Oct 2026 17:55:31 +0000 https://vulnerability.circl.lu/vuln/cve-2026-104380 <p><strong>Affected:</strong> Punk</p> <p>Punk versions from 0.48 before 0.55 for Perl route Extended CONNECT requests to any GET route without an Origin check in ps_serve_one.</p> <p>On HTTP/2 and HTTP/3 a WebSocket handshake arrives as an Extended CONNECT, which is matched as a GET and so reaches every GET route, API operation and mount. The Origin check runs only when a websocket route matches. On this transport the handler&#39;s status is the handshake response, and a 2xx accepts it.</p> <p>A cross-origin page can open a WebSocket to any path and learn from its open or error event whether that path returns 2xx.</p> <p><strong>Affected:</strong> Punk</p> <p>Punk versions from 0.48 before 0.55 for Perl route Extended CONNECT requests to any GET route without an Origin check in ps_serve_one.</p> <p>On HTTP/2 and HTTP/3 a WebSocket handshake arrives as an Extended CONNECT, which is matched as a GET and so reaches every GET route, API operation and mount. The Origin check runs only when a websocket route matches. On this transport the handler&#39;s status is the handshake response, and a 2xx accepts it.</p> <p>A cross-origin page can open a WebSocket to any path and learn from its open or error event whether that path returns 2xx.</p> https://vulnerability.circl.lu/vuln/cve-2026-104380