CVE-2026-93573
Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
18/09/2026
Last modified:
09/10/2026
Description
A flaw was found in Netty's HTTP/1.1 decoder. This vulnerability allows a remote attacker to bypass `Transfer-Encoding` header validation by splitting the `Transfer-Encoding` field across multiple headers, with the last field containing a non-final transfer coding like `gzip` or `deflate`. This bypass can lead to HTTP request smuggling, enabling attackers to bypass security controls, desynchronize request processing, or cause requests to be processed in an unintended context.
Impact
Base Score 3.x
6.50
Severity 3.x
MEDIUM