CVE-2026-93573

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.
Configurations

No configuration.

History

15 Oct 2026, 17:17

Type Values Removed Values Added
References
  • () https://access.redhat.com/errata/RHSA-2026:83612 -

22 Sep 2026, 23:17

Type Values Removed Values Added
References
  • () https://access.redhat.com/errata/RHSA-2026:69440 -

21 Sep 2026, 18:17

Type Values Removed Values Added
References
  • () https://access.redhat.com/errata/RHSA-2026:69470 -

18 Sep 2026, 21:18

Type Values Removed Values Added
Summary (en) Netty split Transfer-Encoding fields bypass final-chunked validation and enable request smuggling (en) 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.

18 Sep 2026, 15:17

Type Values Removed Values Added
New CVE

Information

Published : 2026-09-18 15:17

Updated : 2026-10-15 17:17


NVD link : CVE-2026-93573

Mitre link : CVE-2026-93573

CVE.ORG link : CVE-2026-93573


JSON object : View

Products Affected

No product.

CWE
CWE-444

Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')