CVE-2026-23933: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-5j5m-c26m-fvc8
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CVSS 9.1
CWE-259
Published
Advisory Summary

CVE-2026-23933 is a HIGH (CVSS 9.1) security vulnerability vulnerability (CWE-259: Use of Hard-coded Password) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product contains a hard-coded password, which it uses for its own inbound authentication or for outbound communication to external components.. Remediation is available in the latest vendor maintenance releases.

CVE-2026-23933 at a Glance

CVE Identifier CVE-2026-23933
GHSA Identifier GHSA-5j5m-c26m-fvc8
Severity HIGH
CVSS v3.1 Base Score 9.1
CWE Classification CWE-259: Use of Hard-coded Password
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 9.1

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:N).

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 None (A:N)

How to Fix CVE-2026-23933

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-2026-23933, 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-259: Use of Hard-coded Password, where the product contains a hard-coded password, which it uses for its own inbound authentication or for outbound communication to external components. 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

In Zabbix 7.4 the cryptographic key used for signing Frontend sessions has been erroneously written to the database seed. Currently the only known exploitation scenario is for deployments that utilize both - SAML authentication and guest users. In such cases the key can be used to forge valid session cookies, potentially leading to unauthorized access. For other Zabbix deployments this does not have a known impact.

References

NVD — CVE-2026-23933 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-23933
support.zabbix.com/browse/zbx-28071 WEB
https://support.zabbix.com/browse/ZBX-28071

Frequently Asked Questions

What is CVE-2026-23933?
CVE-2026-23933 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-259: Use of Hard-coded Password.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-23933?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-23933?
CVE-2026-23933 has a CVSS v3.1 base score of 9.1 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.
What CWE is associated with CVE-2026-23933?
CVE-2026-23933 is classified under CWE-259: Use of Hard-coded Password (The product contains a hard-coded password, which it uses for its own inbound authentication or for outbound communication to external components.).
How can I check Maven dependencies for CVE-2026-23933?
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-5j5m-c26m-fvc8",
  "modified" : "2026-09-23T15:30:36Z",
  "published" : "2026-08-18T15:31:37Z",
  "aliases" : [ "CVE-2026-23933" ],
  "details" : "In Zabbix 7.4 the cryptographic key used for signing Frontend sessions has been erroneously written to the database seed. Currently the only known exploitation scenario is for deployments that utilize both - SAML authentication and guest users. In such cases the key can be used to forge valid session cookies, potentially leading to unauthorized access. For other Zabbix deployments this does not have a known impact.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/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-2026-23933"
  }, {
    "type" : "WEB",
    "url" : "https://support.zabbix.com/browse/ZBX-28071"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-259" ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-08-18T13:17:21Z"
  }
}