PT-2026-29925

Summary Rack::Multipart::Parser extracts the boundary parameter from multipart/form-data using a greedy regular expression. When a Content-Type header contains multiple boundary parameters, Rack selects the last one rather than the first. In deployments where an upstream proxy, WAF, or intermedia...

python-aiohttp: http request smuggling

An HTTP request smuggling vulnerability was found in aiohttp. Security-sensitive parts of the Python HTTP parser retained minor differences in allowable character sets that must trigger error handling to robustly match frame boundaries of proxies in order to protect against the injection of...