# CVE-2023-40167: Jetty accepts "+" prefixed value in Content-Length

Source: https://junglewise.ai/threats/cve-2023-40167-jetty-accepts-prefixed-value-in-content-length  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2023-09-14  
License: CC BY 4.0 with a link back

CVE-2023-40167 · Severity: low · CVSS 3.1 · Published 2023-09-14

Jetty accepts "+" prefixed value in Content-Length

Technologies: [org.eclipse.jetty:jetty-http (Maven)](https://junglewise.ai/threats/technologies/org-eclipse-jetty-jetty-http). Vendors: [Maven](https://junglewise.ai/threats/vendors/maven).

## Quick answers

**Is CVE-2023-40167 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2023-40167 being exploited in the wild.

**How severe is CVE-2023-40167?** Low severity, with a CVSS score of 3.1, published 14 September 2023.

**Which products and versions are affected?** org.eclipse.jetty:jetty-http (Maven) ECOSYSTEM:introduced=9.0.0,fixed=9.4.52.

**Is there a fix for CVE-2023-40167?** Yes. org.eclipse.jetty:jetty-http (Maven): upgrade to 9.4.52 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected by CVE-2023-40167?** Check whether you run org.eclipse.jetty:jetty-http (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

- org.eclipse.jetty:jetty-http (Maven): upgrade to 9.4.52 or later

  ```sh
  # set org.eclipse.jetty:jetty-http to 9.4.52 in your pom.xml or build.gradle
  ```


## Affected products

- org.eclipse.jetty:jetty-http (Maven) ECOSYSTEM:introduced=9.0.0,fixed=9.4.52

## Identifiers

- CVE-2023-40167
- GHSA-hmr7-m48g-48f6

## Related threats

- [Eclipse Jetty HTTP request smuggling in chunk extension parsing](https://junglewise.ai/threats/cve-2026-2332-eclipse-jetty-http-request-smuggling-in-chunk-extension-parsing)
- [org.eclipse.jetty:jetty-http has different parsing of invalid URIs](https://junglewise.ai/threats/cve-2025-11143-org-eclipse-jetty-jetty-http-has-different-parsing-of-invalid)
- [Eclipse Jetty URI parsing of invalid authority](https://junglewise.ai/threats/cve-2024-6763-eclipse-jetty-uri-parsing-of-invalid-authority)
- [Jetty invalid URI parsing may produce invalid HttpURI.authority](https://junglewise.ai/threats/cve-2022-2047-jetty-invalid-uri-parsing-may-produce-invalid-httpuri-authority)