CVE-2026-42545
MEDIUM
NVD
CVSS Score
5.9
Severity
MEDIUM
Published
May 12, 2026
Vendor
unknown
Description
Granian is a Rust HTTP server for Python applications. From 0.2.0 to 2.7.4, 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 handled error. This vulnerability is fixed in 2.7.4.