CVE-2022-31684: Reactor netty http Invalid HTTP Requests Vulnerability

MODERATE
Advisory Identifier: GHSA-7w4x-4h67-pgmv
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CVSS 4.3
CWE-532 CWE-200
Published
Advisory Summary

CVE-2022-31684 is a MODERATE (CVSS 4.3) invalid http requests vulnerability (CWE-532: Insertion of Sensitive Information into Log File) affecting Reactor netty http libraries in the Maven ecosystem. The issue involves invalid http requests in reactor netty http server may reveal access tokens. Remediation is available by upgrading affected packages to version 1.0.24.

CVE-2022-31684 at a Glance

CVE Identifier CVE-2022-31684
GHSA Identifier GHSA-7w4x-4h67-pgmv
Severity MODERATE
CVSS v3.1 Base Score 4.3
CWE Classification CWE-532: Insertion of Sensitive Information into Log File
Affected Product Reactor netty http
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 4.3

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality Low (C:L)
Integrity None (I:N)
Availability None (A:N)

How to Fix CVE-2022-31684

To remediate this vulnerability, upgrade all affected Reactor netty http dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

io.projectreactor.netty:reactor-netty-http fixed: 1.0.24 
<dependency>
    <groupId>io.projectreactor.netty</groupId>
    <artifactId>reactor-netty-http</artifactId>
    <version>1.0.24</version>
</dependency>
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

mvn dependency:tree -Dincludes=io.projectreactor.netty

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2022-31684, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree -Dincludes=io.projectreactor.netty

Analyze the terminal output to locate any version of Reactor netty http in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.0.24), your application is affected.

Note: The mvn dependency:tree -Dincludes=io.projectreactor.netty command inspects the resolved dependency graph declared in your project's POM files; it does not perform automated security scanning or inspect runtime dynamic classpaths. Always verify runtime container classpaths and shaded JARs.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-532: Insertion of Sensitive Information into Log File, where the product writes sensitive information to a log file. In Reactor netty http, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

Reactor Netty HTTP Server, in versions 1.0.11 - 1.0.23, may request log headers in some cases of invalid HTTP requests. The logged headers may reveal valid access tokens to those with access to server logs. This may affect only invalid HTTP requests where logging at WARN level is enabled.

CVE-2022-31684 Affected Reactor netty http Versions

1 component(s)
Fixed Versions:
1.0.24
Product / Package Ecosystem Affected Versions Fixed Version
io.projectreactor.netty:reactor-netty-http
maven/io.projectreactor.netty/reactor-netty-http
Maven
≥ 1.0.11
< 1.0.24
1.0.24

References

NVD — CVE-2022-31684 NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-31684
search.maven.org/artifact/io.project... PACKAGE
https://search.maven.org/artifact/io.projectreactor.netty/reactor-netty-http
Reactor netty http Security Information SECURITY
https://tanzu.vmware.com/security/cve-2022-31684

Frequently Asked Questions

What is CVE-2022-31684?
CVE-2022-31684 is a security vulnerability in Reactor netty http involving Invalid HTTP requests in Reactor Netty HTTP Server may reveal access tokens under CWE-532: Insertion of Sensitive Information into Log File.
Which Reactor netty http versions are affected?
Affected versions include releases prior to 1.0.24 across affected packages: io.projectreactor.netty:reactor-netty-http.
What version fixes CVE-2022-31684?
Upgrading to 1.0.24 (or the latest patched release for your respective branch) resolves the vulnerability.
Is reactor-netty-http affected?
Yes, io.projectreactor.netty:reactor-netty-http is affected in releases prior to 1.0.24. Upgrade your dependency to 1.0.24 or later.
What is the CVSS score of CVE-2022-31684?
CVE-2022-31684 has a CVSS v3.1 base score of 4.3 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.
What CWE is associated with CVE-2022-31684?
CVE-2022-31684 is classified under CWE-532: Insertion of Sensitive Information into Log File (The product writes sensitive information to a log file.).
How can I check Maven dependencies for CVE-2022-31684?
Run the dependency tree command: 'mvn dependency:tree -Dincludes=io.projectreactor.netty'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-7w4x-4h67-pgmv",
  "modified" : "2025-05-09T16:32:54Z",
  "published" : "2022-10-20T12:00:17Z",
  "aliases" : [ "CVE-2022-31684" ],
  "summary" : "Invalid HTTP requests in Reactor Netty HTTP Server may reveal access tokens",
  "details" : "Reactor Netty HTTP Server, in versions 1.0.11 - 1.0.23, may request log headers in some cases of invalid HTTP requests. The logged headers may reveal valid access tokens to those with access to server logs. This may affect only invalid HTTP requests where logging at WARN level is enabled.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "io.projectreactor.netty:reactor-netty-http"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "1.0.11"
      }, {
        "fixed" : "1.0.24"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2022-31684"
  }, {
    "type" : "PACKAGE",
    "url" : "https://search.maven.org/artifact/io.projectreactor.netty/reactor-netty-http"
  }, {
    "type" : "WEB",
    "url" : "https://tanzu.vmware.com/security/cve-2022-31684"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-200", "CWE-532" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-10-20T18:40:50Z",
    "nvd_published_at" : "2022-10-19T22:15:00Z"
  }
}