# CVE-2023-3223: Undertow vulnerable to denial of service

Source: https://junglewise.ai/threats/cve-2023-3223-undertow-vulnerable-to-denial-of-service  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2023-09-27  
License: CC BY 4.0 with a link back

CVE-2023-3223 · Severity: low · CVSS 3.1 · Published 2023-09-27

Undertow vulnerable to denial of service

Technologies: [io.undertow:undertow-parent (Maven)](https://junglewise.ai/threats/technologies/io-undertow-undertow-parent). Vendors: [Maven](https://junglewise.ai/threats/vendors/maven).

## Quick answers

**Is CVE-2023-3223 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2023-3223 being exploited in the wild.

**How severe is CVE-2023-3223?** Low severity, with a CVSS score of 3.1, published 27 September 2023.

**Which products and versions are affected?** io.undertow:undertow-parent (Maven) ECOSYSTEM:introduced=0,fixed=2.2.24.Final.

**Is there a fix for CVE-2023-3223?** Yes. io.undertow:undertow-parent (Maven): upgrade to 2.2.24.Final or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected by CVE-2023-3223?** Check whether you run io.undertow:undertow-parent (Maven) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- io.undertow:undertow-parent (Maven): upgrade to 2.2.24.Final or later

  ```sh
  # set io.undertow:undertow-parent to 2.2.24.Final in your pom.xml or build.gradle
  ```


## Affected products

- io.undertow:undertow-parent (Maven) ECOSYSTEM:introduced=0,fixed=2.2.24.Final

## Identifiers

- CVE-2023-3223
- GHSA-65h2-wf7m-q2v8

## Related threats

- [Red Hat Undertow request smuggling via malformed HTTP headers](https://junglewise.ai/threats/cve-2026-28369-red-hat-undertow-request-smuggling-via-malformed-http-headers)
- [Red Hat Undertow request smuggling via inconsistent header parsing](https://junglewise.ai/threats/cve-2026-28368-red-hat-undertow-request-smuggling-via-inconsistent-header)
- [Red Hat Undertow request smuggling via malformed header terminator](https://junglewise.ai/threats/cve-2026-28367-red-hat-undertow-request-smuggling-via-malformed-header)