CVE-2026-110674: Software Security Vulnerability Vulnerability

UNKNOWN
Advisory Identifier: GHSA-c92x-ph36-v6p2
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CWE-176
Published
Advisory Summary

CVE-2026-110674 is a security vulnerability vulnerability (CWE-176: Improper Handling of Unicode Encoding) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product does not properly handle when an input contains unicode encoding.. Remediation is available in the latest vendor maintenance releases.

CVE-2026-110674 at a Glance

CVE Identifier CVE-2026-110674
GHSA Identifier GHSA-c92x-ph36-v6p2
Severity N/A
CVSS v3.1 Base Score N/A
CWE Classification CWE-176: Improper Handling of Unicode Encoding
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

How to Fix CVE-2026-110674

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

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

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2026-110674, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree

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

Note: The mvn dependency:tree 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-176: Improper Handling of Unicode Encoding, where the product does not properly handle when an input contains unicode encoding. In Software, 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

Cpanel::JSON::XS versions from 4.33 before 4.80 for Perl miss duplicate non-ASCII bare keys, allowing type confusion under dupkeys_as_arrayref in decode_hv. With allow_barekey, which relaxed enables, a bare key containing a non-ASCII byte is stored as UTF-8 but looked up as raw bytes, so a repeated key escapes the duplicate-key check and replaces the earlier value. From 4.41, under dupkeys_as_arrayref, a bare repeat replaces the array that collects a key's values with a plain value, and the next quoted repeat pushes onto that value as if it were an array. A JSON integer there is dereferenced as a pointer. Untrusted JSON decoded with relaxed and dupkeys_as_arrayref can crash the process or dereference an address chosen by a JSON number.

References

NVD — CVE-2026-110674 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-110674
Security Fix Commit FIX COMMIT
https://github.com/rurban/Cpanel-JSON-XS/commit/c52037857d6a99d96ebd1ce3e2fa769505f028cf.patch
metacpan.org/release/rurban/cpan... WEB
https://metacpan.org/release/RURBAN/Cpanel-JSON-XS-4.80/changes
CVE Official Record — CVE-2026-110674 CVE
https://www.cve.org/CVERecord?id=CVE-2026-9334

Frequently Asked Questions

What is CVE-2026-110674?
CVE-2026-110674 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-176: Improper Handling of Unicode Encoding.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-110674?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-110674?
CVE-2026-110674 is classified under CWE-176: Improper Handling of Unicode Encoding (The product does not properly handle when an input contains Unicode encoding.).
How can I check Maven dependencies for CVE-2026-110674?
Run the dependency tree command: 'mvn dependency:tree'. 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-c92x-ph36-v6p2",
  "modified" : "2026-10-19T21:36:28Z",
  "published" : "2026-10-19T21:36:28Z",
  "aliases" : [ "CVE-2026-110674" ],
  "details" : "Cpanel::JSON::XS versions from 4.33 before 4.80 for Perl miss duplicate non-ASCII bare keys, allowing type confusion under dupkeys_as_arrayref in decode_hv.\n\nWith allow_barekey, which relaxed enables, a bare key containing a non-ASCII byte is stored as UTF-8 but looked up as raw bytes, so a repeated key escapes the duplicate-key check and replaces the earlier value.\n\nFrom 4.41, under dupkeys_as_arrayref, a bare repeat replaces the array that collects a key's values with a plain value, and the next quoted repeat pushes onto that value as if it were an array. A JSON integer there is dereferenced as a pointer.\n\nUntrusted JSON decoded with relaxed and dupkeys_as_arrayref can crash the process or dereference an address chosen by a JSON number.",
  "severity" : [ ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-110674"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/rurban/Cpanel-JSON-XS/commit/c52037857d6a99d96ebd1ce3e2fa769505f028cf.patch"
  }, {
    "type" : "WEB",
    "url" : "https://metacpan.org/release/RURBAN/Cpanel-JSON-XS-4.80/changes"
  }, {
    "type" : "WEB",
    "url" : "https://www.cve.org/CVERecord?id=CVE-2026-9334"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-176" ],
    "severity" : null,
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-10-19T19:17:21Z"
  }
}