Vulnerability in Red Hat Amq Broker 7

CVE-2026-93569

A flaw was found in Netty. A remote unauthenticated attacker can exploit a vulnerability in Netty's HTTP/1 to HTTP/2 conversion process. When an HTTP/1 request includes both an absolute-form request-target and a conflicting Host header, Netty incorrectly prioritizes the Host header for the HTTP/2 :authority field, discarding the original request-target authority. This inconsistency can allow an attacker to bypass security controls in Netty-based proxies or gateways, potentially leading to unauthorized access, cache poisoning, or misrouting of requests.

Vulnerability class: HTTP Request Smuggling

Published · last modified .

CVSS v3 metric

CVSS v3 base score 8.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N.

EPSS exploit prediction

EPSS: 0.022 (82.5th percentile), scored .

Low probability of exploitation in the next 30 days, but still tracked. 82nd percentile — 82.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-93569: rose from 0.014 to 0.022.

EPSS over last 30 days · oldest: 0.014 · newest: 0.022 · change: +0.008

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-93569?
CVE-2026-93569 is a high-severity vulnerability in Red Hat Amq Broker 7, classified under Inconsistent Interpretation of HTTP Requests (HTTP Request/Response Smuggling). CVSS score: 8.2/10. Published 2026-09-18.
How severe is CVE-2026-93569?
High severity. CVSS v3 base score is 8.2 out of 10.