PYSEC-2026-2502 Granian vulnerable to DoS via WSGI response header panic

Summary Granian aborts a worker process if a WSGI application returns an invalid HTTP response header name or value. The WSGI response conversion path uses .unwrap on both the header name and header value constructors, so malformed output from the application becomes a process abort instead of a...

Uncaught Exception

Overview granian is an A Rust HTTP server for Python applications Affected versions of this package are vulnerable to Uncaught Exception via the Sec-WebSocket-Protocol header processing in the WebSocket upgrade request path. An attacker can cause a worker process to terminate unexpectedly by...

PT-2026-38269

Name of the Vulnerable Software and Affected Versions Granian versions 0.2.0 through 2.7.3 Description Granian aborts a worker process when a WSGI application returns an invalid HTTP response header name or value. This occurs because the WSGI response conversion path utilizes .unwrap on both head...