CVE-2026-84149: Software Security Vulnerability Vulnerability

CRITICAL
Advisory Identifier: GHSA-mpmp-g8h4-fq2c
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CWE-527
Published
Advisory Summary

CVE-2026-84149 is a CRITICAL security vulnerability vulnerability (CWE-527: Exposure of Version-Control Repository to an Unauthorized Control Sphere) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product stores a cvs, git, or other repository in a directory, archive, or other resource that is stored, transferred, or otherwise made accessible to unauthorized actors.. Remediation is available in the latest vendor maintenance releases.

CVE-2026-84149 at a Glance

CVE Identifier CVE-2026-84149
GHSA Identifier GHSA-mpmp-g8h4-fq2c
Severity CRITICAL
CVSS v3.1 Base Score N/A
CWE Classification CWE-527: Exposure of Version-Control Repository to an Unauthorized Control Sphere
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

How to Fix CVE-2026-84149

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-2026-84149, 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-527: Exposure of Version-Control Repository to an Unauthorized Control Sphere, where the product stores a cvs, git, or other repository in a directory, archive, or other resource that is stored, transferred, or otherwise made accessible to unauthorized actors. 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

This vulnerability exists in the ERP system due to exposure of repository information through a publicly accessible .git directory. An unauthenticated remote attacker could exploit this vulnerability by accessing the exposed .git directory and retrieving repository metadata and associated files, which could allow reconstruction of the application's source code.

References

NVD — CVE-2026-84149 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-84149
www.cert-in.org.in/s2cmainservlet WEB
https://www.cert-in.org.in/s2cMainServlet?pageid=PUBVLNOTES01&VLCODE=CIVN-2026-0430

Frequently Asked Questions

What is CVE-2026-84149?
CVE-2026-84149 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-527: Exposure of Version-Control Repository to an Unauthorized Control Sphere.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-84149?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-84149?
CVE-2026-84149 is classified under CWE-527: Exposure of Version-Control Repository to an Unauthorized Control Sphere (The product stores a CVS, git, or other repository in a directory, archive, or other resource that is stored, transferred, or otherwise made accessible to unauthorized actors.).
How can I check Maven dependencies for CVE-2026-84149?
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-mpmp-g8h4-fq2c",
  "modified" : "2026-09-01T15:31:11Z",
  "published" : "2026-09-01T15:31:11Z",
  "aliases" : [ "CVE-2026-84149" ],
  "details" : "This vulnerability exists in the ERP system due to exposure of repository information through a publicly accessible .git directory. An unauthenticated remote attacker could exploit this vulnerability by accessing the exposed .git directory and retrieving repository metadata and associated files, which could allow reconstruction of the application's source code.",
  "severity" : [ {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-84149"
  }, {
    "type" : "WEB",
    "url" : "https://www.cert-in.org.in/s2cMainServlet?pageid=PUBVLNOTES01&VLCODE=CIVN-2026-0430"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-527" ],
    "severity" : "CRITICAL",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-09-01T13:20:09Z"
  }
}