CVE-2026-93573 Other in Red Hat AMQ Broker 7
Remote attackers can bypass HTTP transfer-encoding validation in Netty to perform request smuggling, bypassing security controls and desynchronizing request processing.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-93573?
CVE-2026-93573 is a medium-severity vulnerability in Red Hat AMQ Broker 7, published on 18 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-444
Which versions are affected by CVE-2026-93573?
How do I fix CVE-2026-93573?
Upgrade to a fixed version.
Is CVE-2026-93573 being exploited?
There is no known exploitation of CVE-2026-93573 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2026-93573, GHSA-xvf3-842c-j48x, UBUNTU-CVE-2026-93573.