CVE-2026-76183: Software Security Vulnerability Vulnerability

UNKNOWN
Advisory Identifier: GHSA-q4fc-3vv4-fh24
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CWE-289
Published
Advisory Summary

CVE-2026-76183 is a security vulnerability vulnerability (CWE-289: Authentication Bypass by Alternate Name) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product performs authentication based on the name of a resource being accessed, or the name of the actor performing the access, but it does not properly check all possible names for that resource or actor.. Remediation is available in the latest vendor maintenance releases.

CVE-2026-76183 at a Glance

CVE Identifier CVE-2026-76183
GHSA Identifier GHSA-q4fc-3vv4-fh24
Severity N/A
CVSS v3.1 Base Score N/A
CWE Classification CWE-289: Authentication Bypass by Alternate Name
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

How to Fix CVE-2026-76183

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-2026-76183, 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-289: Authentication Bypass by Alternate Name, where the product performs authentication based on the name of a resource being accessed, or the name of the actor performing the access, but it does not properly check all possible names for that resource or actor. 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

Authentication Bypass by Alternate Name vulnerability in Apache Tomcat allowed the security constraints for any WebSocket endpoint to be bypassed. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.25, from 10.1.0-M1 through 10.1.59, from 9.0.0.M1 through 9.0.121. The following versions were EOS at the time the CVE was created but are known to be affected: from 8.5.0 through 8.5.100, from 7.0.43 through 7.0.109. Other unsupported versions may also be affected. Users are recommended to upgrade to version 11.0.26, 10.1.60 or 9.0.122, which fix the issue.

References

NVD — CVE-2026-76183 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-76183
lists.apache.org/thread/45mxk8nj2q8p... WEB
https://lists.apache.org/thread/45mxk8nj2q8pkhct6lfxkvtm2jpywrsp

Frequently Asked Questions

What is CVE-2026-76183?
CVE-2026-76183 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-289: Authentication Bypass by Alternate Name.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-76183?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-76183?
CVE-2026-76183 is classified under CWE-289: Authentication Bypass by Alternate Name (The product performs authentication based on the name of a resource being accessed, or the name of the actor performing the access, but it does not properly check all possible names for that resource or actor.).
How can I check Maven dependencies for CVE-2026-76183?
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-q4fc-3vv4-fh24",
  "modified" : "2026-09-23T12:31:15Z",
  "published" : "2026-09-23T12:31:15Z",
  "aliases" : [ "CVE-2026-76183" ],
  "details" : "Authentication Bypass by Alternate Name vulnerability in Apache Tomcat allowed the security constraints for any WebSocket endpoint to be bypassed.\n\n\n\nThis issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.25, from 10.1.0-M1 through 10.1.59, from 9.0.0.M1 through 9.0.121.\n\n\n\nThe following versions were EOS at the time the CVE was created but are \nknown to be affected: from 8.5.0 through 8.5.100, from 7.0.43 through 7.0.109. Other unsupported versions may also be affected.\n\n\n\n\nUsers are recommended to upgrade to version 11.0.26, 10.1.60 or 9.0.122, which fix the issue.",
  "severity" : [ ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-76183"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread/45mxk8nj2q8pkhct6lfxkvtm2jpywrsp"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-289" ],
    "severity" : null,
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-09-23T12:17:06Z"
  }
}