CVE-2026-48480: OHttpVersionChunkDraft Remote Code Execution Vulnerability

MODERATE
Advisory Identifier: GHSA-r6fj-869h-4f6q
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CWE-325
Published
Advisory Summary

CVE-2026-48480 is a MODERATE remote code execution vulnerability (CWE-325: Missing Cryptographic Step) affecting OHttpVersionChunkDraft libraries in the Maven ecosystem. The issue involves missing final-chunk enforcement leads to undetected stream truncation. Remediation is available by upgrading affected packages to version 0.0.22.Final.

CVE-2026-48480 at a Glance

CVE Identifier CVE-2026-48480
GHSA Identifier GHSA-r6fj-869h-4f6q
Severity MODERATE
CVSS v3.1 Base Score N/A
CWE Classification CWE-325: Missing Cryptographic Step
Affected Product OHttpVersionChunkDraft
Package Ecosystem Maven
Published Date
Last Updated

How to Fix CVE-2026-48480

To remediate this vulnerability, upgrade all affected OHttpVersionChunkDraft 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.netty.incubator:netty-incubator-codec-ohttp fixed: 0.0.22.Final 
<dependency>
    <groupId>io.netty.incubator</groupId>
    <artifactId>netty-incubator-codec-ohttp</artifactId>
    <version>0.0.22.Final</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.netty.incubator

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2026-48480, inspect your build dependencies using the Maven Dependency Plugin:

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

Analyze the terminal output to locate any version of OHttpVersionChunkDraft in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.0.22.Final), your application is affected.

Note: The mvn dependency:tree -Dincludes=io.netty.incubator 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-325: Missing Cryptographic Step, where the product does not implement a required step in a cryptographic algorithm, resulting in weaker encryption than advertised by the algorithm. In OHttpVersionChunkDraft, 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

The codec-ohttp implementation of draft-ietf-ohai-chunked-ohttp does not verify that a cryptographically-signed final chunk was received before the outer HTTP body terminates. An on-path adversary (the OHTTP relay itself, or any MITM on the relay↔gateway or relay↔client transport) can forward a prefix of a legitimate chunked-OHTTP message—cut at a non-final chunk boundary—and close the outer body cleanly, producing no decryption error and no exception in the receiving application.

CVE-2026-48480 Affected OHttpVersionChunkDraft Versions

1 component(s)
Fixed Versions:
0.0.22.Final
Product / Package Ecosystem Affected Versions Fixed Version
io.netty.incubator:netty-incubator-codec-ohttp
maven/io.netty.incubator/netty-incubator-codec-ohttp
Maven
< 0.0.22.Final
0.0.22.Final

References

GitHub Advisory / Wiki ADVISORY
https://github.com/netty/netty-incubator-codec-ohttp/security/advisories/GHSA-r6fj-869h-4f6q
NVD — CVE-2026-48480 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-48480
Security Fix Commit FIX COMMIT
https://github.com/netty/netty-incubator-codec-ohttp/commit/28f977f293591a4e837bd59ceb441f9f70349915
OHttpVersionChunkDraft Source Repository REPOSITORY
https://github.com/netty/netty-incubator-codec-ohttp

Frequently Asked Questions

What is CVE-2026-48480?
CVE-2026-48480 is a security vulnerability in OHttpVersionChunkDraft involving Missing Final-Chunk Enforcement Leads to Undetected Stream Truncation under CWE-325: Missing Cryptographic Step.
Which OHttpVersionChunkDraft versions are affected?
Affected versions include releases prior to 0.0.22.Final across affected packages: io.netty.incubator:netty-incubator-codec-ohttp.
What version fixes CVE-2026-48480?
Upgrading to 0.0.22.Final (or the latest patched release for your respective branch) resolves the vulnerability.
Is netty-incubator-codec-ohttp affected?
Yes, io.netty.incubator:netty-incubator-codec-ohttp is affected in releases prior to 0.0.22.Final. Upgrade your dependency to 0.0.22.Final or later.
What CWE is associated with CVE-2026-48480?
CVE-2026-48480 is classified under CWE-325: Missing Cryptographic Step (The product does not implement a required step in a cryptographic algorithm, resulting in weaker encryption than advertised by the algorithm.).
How can I check Maven dependencies for CVE-2026-48480?
Run the dependency tree command: 'mvn dependency:tree -Dincludes=io.netty.incubator'. 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-r6fj-869h-4f6q",
  "modified" : "2026-06-23T21:59:03Z",
  "published" : "2026-06-23T21:59:03Z",
  "aliases" : [ "CVE-2026-48480" ],
  "summary" : "OHttpVersionChunkDraft: Missing Final-Chunk Enforcement Leads to Undetected Stream Truncation",
  "details" : "The codec-ohttp implementation of draft-ietf-ohai-chunked-ohttp does not verify that a cryptographically-signed final chunk was received before the outer HTTP body terminates. An on-path adversary (the OHTTP relay itself, or any MITM on the relay↔gateway or relay↔client transport) can forward a prefix of a legitimate chunked-OHTTP message—cut at a non-final chunk boundary—and close the outer body cleanly, producing no decryption error and no exception in the receiving application.",
  "severity" : [ {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "io.netty.incubator:netty-incubator-codec-ohttp"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.0.22.Final"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/netty/netty-incubator-codec-ohttp/security/advisories/GHSA-r6fj-869h-4f6q"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-48480"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/netty/netty-incubator-codec-ohttp/commit/28f977f293591a4e837bd59ceb441f9f70349915"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/netty/netty-incubator-codec-ohttp"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-325" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-06-23T21:59:03Z",
    "nvd_published_at" : "2026-06-04T19:16:30Z"
  }
}