CVE-2026-55957: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-7895-gffq-w6jq
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CVSS 7.3
CWE-304
Published
Advisory Summary

CVE-2026-55957 is a HIGH (CVSS 7.3) security vulnerability vulnerability (CWE-304: Missing Critical Step in Authentication) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product implements an authentication technique, but it skips a step that weakens the technique.. Remediation is available in the latest vendor maintenance releases.

CVE-2026-55957 at a Glance

CVE Identifier CVE-2026-55957
GHSA Identifier GHSA-7895-gffq-w6jq
Severity HIGH
CVSS v3.1 Base Score 7.3
CWE Classification CWE-304: Missing Critical Step in Authentication
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 7.3

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:L/I:L/A:L).

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 Low (C:L)
Integrity Low (I:L)
Availability Low (A:L)

How to Fix CVE-2026-55957

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-2026-55957, 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-304: Missing Critical Step in Authentication, where the product implements an authentication technique, but it skips a step that weakens the technique. 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

Missing Critical Step in Authentication vulnerability in Apache Tomcat when the JNDIRealm was configured to authenticate binds using GSSAPI allowed attackers to authenticate without provided the correct password. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.4, from 10.1.0-M1 through 10.1.36, from 9.0.0.M1 through 9.0.100, from 8.5.0 through 8.5.100, from 7.0.0 through 7.0.109. Users are recommended to upgrade to version 11.0.5, 10.1.37 or 9.0.101, which fixes the issue.

References

NVD — CVE-2026-55957 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-55957
lists.apache.org/thread/7fk339o5jvd4... WEB
https://lists.apache.org/thread/7fk339o5jvd4mcgsf0chbrn4o525ccjh
Software Security Information SECURITY
http://www.openwall.com/lists/oss-security/2026/06/29/26

Frequently Asked Questions

What is CVE-2026-55957?
CVE-2026-55957 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-304: Missing Critical Step in Authentication.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-55957?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-55957?
CVE-2026-55957 has a CVSS v3.1 base score of 7.3 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L.
What CWE is associated with CVE-2026-55957?
CVE-2026-55957 is classified under CWE-304: Missing Critical Step in Authentication (The product implements an authentication technique, but it skips a step that weakens the technique.).
How can I check Maven dependencies for CVE-2026-55957?
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-7895-gffq-w6jq",
  "modified" : "2026-06-30T15:30:43Z",
  "published" : "2026-06-29T21:32:15Z",
  "aliases" : [ "CVE-2026-55957" ],
  "details" : "Missing Critical Step in Authentication vulnerability in Apache Tomcat when the JNDIRealm was configured to authenticate binds using GSSAPI allowed attackers to authenticate without provided the correct password.\n\nThis issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.4, from 10.1.0-M1 through 10.1.36, from 9.0.0.M1 through 9.0.100, from 8.5.0 through 8.5.100, from 7.0.0 through 7.0.109.\n\nUsers are recommended to upgrade to version 11.0.5, 10.1.37 or 9.0.101, which fixes the issue.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-55957"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread/7fk339o5jvd4mcgsf0chbrn4o525ccjh"
  }, {
    "type" : "WEB",
    "url" : "http://www.openwall.com/lists/oss-security/2026/06/29/26"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-304" ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-06-29T21:16:45Z"
  }
}