CVE-2026-93573

MEDIUMCVSS 6.5/10

Last modified

CVE-2026-93573 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. 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`.

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.

Metrics

Weakness Enumeration

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
Red HatRed Hat AMQ Broker 7All versions
Red HatRed Hat AMQ ClientsAll versions
Red HatRed Hat build of Apache Camel 4 for Quarkus 3All versions
Red HatRed Hat build of Apache Camel for Spring Boot 4All versions
Red HatRed Hat build of Apicurio Registry 3All versions
Red HatRed Hat build of Debezium 3All versions
Red HatRed Hat Build of KeycloakAll versions
Red HatRed Hat build of QuarkusAll versions
Red HatRed Hat Data Grid 8All versions
Red HatRed Hat Fuse 7All versions
Red HatRed Hat JBoss Enterprise Application Platform 7All versions
Red HatRed Hat JBoss Enterprise Application Platform 8All versions
Red HatRed Hat Single Sign-On 7All versions

References

Timeline

Published
Last Modified
Status
Awaiting Analysis

Frequently Asked Questions

What is 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.
How severe is CVE-2026-93573?
CVE-2026-93573 has a CVSS score of 6.5/10 (MEDIUM severity).
How do I fix CVE-2026-93573?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST