# CVE-2026-93569: Security feature bypass in Red Hat AMQ Broker 7

> Attackers can bypass security controls in Netty-based proxies by exploiting HTTP/1 to HTTP/2 conversion flaws, leading to unauthorized access or cache poisoning.

- **Severity:** High 8.2 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 18 Sep 2026
- **Updated:** 19 Oct 2026
- **Also known as:** DEBIAN-CVE-2026-93569, GHSA-xx86-5ch4-942v, UBUNTU-CVE-2026-93569

## What is CVE-2026-93569?

CVE-2026-93569 is a high-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. 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.

Weakness: CWE-444 (Inconsistent Interpretation of HTTP Requests)

## Which versions are affected by CVE-2026-93569?


## How do I fix CVE-2026-93569?

Upgrade to a fixed version.

## Is CVE-2026-93569 being exploited?

There is no known exploitation of CVE-2026-93569 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-93569 and fix it if it is affected.

What it is: CVE-2026-93569 is a high-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.
Exploitation: There is no known exploitation of CVE-2026-93569 in the wild and no public exploit code.

Affected product: Red Hat AMQ Broker 7. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-93569/ (Markdown: https://insights.sbomify.com/CVE-2026-93569/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-93569
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-93569
- OSV: https://osv.dev/vulnerability/CVE-2026-93569

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-93569/
Summaries are generated and may contain mistakes; the official description above is the record.