CVE-2026-21753: Software Security Vulnerability Vulnerability

MODERATE
Advisory Identifier: GHSA-r33r-4v49-3hrg
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CVSS 4.2
CWE-1104
Published
Advisory Summary

CVE-2026-21753 is a MODERATE (CVSS 4.2) security vulnerability vulnerability (CWE-1104: Use of Unmaintained Third Party Components) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product relies on third-party components that are not actively supported or maintained by the original developer or a trusted proxy for the original developer.. Remediation is available in the latest vendor maintenance releases.

CVE-2026-21753 at a Glance

CVE Identifier CVE-2026-21753
GHSA Identifier GHSA-r33r-4v49-3hrg
Severity MODERATE
CVSS v3.1 Base Score 4.2
CWE Classification CWE-1104: Use of Unmaintained Third Party Components
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 4.2

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

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

How to Fix CVE-2026-21753

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-2026-21753, 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-1104: Use of Unmaintained Third Party Components, where the product relies on third-party components that are not actively supported or maintained by the original developer or a trusted proxy for the original developer. 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

HCL Hive is affected by weak software supply chain governance, which could lead to the inclusion of vulnerable, unmaintained, or malicious third-party dependencies within the application environment.

References

NVD — CVE-2026-21753 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-21753
support.hcl-software.com/csm WEB
https://support.hcl-software.com/csm?id=kb_article&sysparm_article=KB0133342

Frequently Asked Questions

What is CVE-2026-21753?
CVE-2026-21753 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-1104: Use of Unmaintained Third Party Components.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-21753?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-21753?
CVE-2026-21753 has a CVSS v3.1 base score of 4.2 (MODERATE) with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N.
What CWE is associated with CVE-2026-21753?
CVE-2026-21753 is classified under CWE-1104: Use of Unmaintained Third Party Components (The product relies on third-party components that are not actively supported or maintained by the original developer or a trusted proxy for the original developer.).
How can I check Maven dependencies for CVE-2026-21753?
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-r33r-4v49-3hrg",
  "modified" : "2026-08-25T12:31:22Z",
  "published" : "2026-08-25T12:31:22Z",
  "aliases" : [ "CVE-2026-21753" ],
  "details" : "HCL Hive is affected by weak software supply chain governance, which could lead to the inclusion of vulnerable, unmaintained, or malicious third-party dependencies within the application environment.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-21753"
  }, {
    "type" : "WEB",
    "url" : "https://support.hcl-software.com/csm?id=kb_article&sysparm_article=KB0133342"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-1104" ],
    "severity" : "MODERATE",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-08-25T11:16:51Z"
  }
}