CVE-2026-53405: Software Security Vulnerability Vulnerability

CRITICAL
Advisory Identifier: GHSA-xvr8-rwv3-hv45
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CVSS 9.8
CWE-653
Published
Advisory Summary

CVE-2026-53405 is a CRITICAL (CVSS 9.8) security vulnerability vulnerability (CWE-653: Improper Isolation or Compartmentalization) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product does not properly compartmentalize or isolate functionality, processes, or resources that require different privilege levels, rights, or permissions.. Remediation is available in the latest vendor maintenance releases.

CVE-2026-53405 at a Glance

CVE Identifier CVE-2026-53405
GHSA Identifier GHSA-xvr8-rwv3-hv45
Severity CRITICAL
CVSS v3.1 Base Score 9.8
CWE Classification CWE-653: Improper Isolation or Compartmentalization
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 9.8

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

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

How to Fix CVE-2026-53405

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-2026-53405, 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-653: Improper Isolation or Compartmentalization, where the product does not properly compartmentalize or isolate functionality, processes, or resources that require different privilege levels, rights, or permissions. 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

Improper Isolation or Compartmentalization vulnerability in Apache Syncope. An administrator with adequate entitlements can import arbitrary BPMN process definitions via the REST API and then start the process. When a BPMN process containing a Groovy scriptTask is imported and started, the Groovy script is executed directly on the server, with no sandbox. This issue affects Apache Syncope: from 3.0.0-M0 through 3.0.16, from 4.0.0-M0 Through 4.0.6, from 4.1.0-M0 through 4.1.1. Users are recommended to upgrade to version 4.0.7 / 4.1.2, which fix this issue by wrapping Flowable's Groovy scriptTasks with security sandbox.

References

NVD — CVE-2026-53405 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-53405
lists.apache.org/thread/vdq0tk6ylffz... WEB
https://lists.apache.org/thread/vdq0tk6ylffz6trbgbllj9kb1ndzff7k
Software Security Information SECURITY
http://www.openwall.com/lists/oss-security/2026/07/20/6

Frequently Asked Questions

What is CVE-2026-53405?
CVE-2026-53405 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-653: Improper Isolation or Compartmentalization.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-53405?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-53405?
CVE-2026-53405 has a CVSS v3.1 base score of 9.8 (CRITICAL) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2026-53405?
CVE-2026-53405 is classified under CWE-653: Improper Isolation or Compartmentalization (The product does not properly compartmentalize or isolate functionality, processes, or resources that require different privilege levels, rights, or permissions.).
How can I check Maven dependencies for CVE-2026-53405?
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-xvr8-rwv3-hv45",
  "modified" : "2026-07-21T18:30:54Z",
  "published" : "2026-07-20T15:32:08Z",
  "aliases" : [ "CVE-2026-53405" ],
  "details" : "Improper Isolation or Compartmentalization vulnerability in Apache Syncope.\n\nAn administrator with adequate entitlements can import arbitrary BPMN process definitions via the REST API and then start the process. When a BPMN process containing a Groovy scriptTask is imported and started, the Groovy script is executed directly on the server, with no sandbox.\n\n\nThis issue affects Apache Syncope: from 3.0.0-M0 through 3.0.16, from 4.0.0-M0 Through 4.0.6, from 4.1.0-M0 through 4.1.1.\n\n\n\n\nUsers are recommended to upgrade to version 4.0.7 / 4.1.2, which fix this issue by wrapping Flowable's Groovy scriptTasks with security sandbox.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-53405"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread/vdq0tk6ylffz6trbgbllj9kb1ndzff7k"
  }, {
    "type" : "WEB",
    "url" : "http://www.openwall.com/lists/oss-security/2026/07/20/6"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-653" ],
    "severity" : "CRITICAL",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-07-20T15:16:42Z"
  }
}