CVE-2026-42251: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-vqmx-wc76-rxc7
Share
CWE-798
Published
Advisory Summary

CVE-2026-42251 is a HIGH security vulnerability vulnerability (CWE-798: Use of Hard-coded Credentials) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product contains hard-coded credentials, such as a password or cryptographic key.. Remediation is available in the latest vendor maintenance releases.

CVE-2026-42251 at a Glance

CVE Identifier CVE-2026-42251
GHSA Identifier GHSA-vqmx-wc76-rxc7
Severity HIGH
CVSS v3.1 Base Score N/A
CWE Classification CWE-798: Use of Hard-coded Credentials
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

How to Fix CVE-2026-42251

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-2026-42251, 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-798: Use of Hard-coded Credentials, where the product contains hard-coded credentials, such as a password or cryptographic key. 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

Use of hard-coded credentials in KS-SOMED allowed an unauthorized attacker access to FTP server that hosted the application's update packages. The attacker with these credentials could upload a malicious update file, which then may have been distributed and installed on client machines as a legitimate update. This issue affects KS-SOMED with modules: KSPLUPDFTP.exe up to 30.00.00.056 and ANEKSKLIENT.EXE up to 29.00.02.026 Beside removing the hard-coded credentials from the code and changing the update process, access granted by previously exposed credentials was limited to read-only.

References

NVD — CVE-2026-42251 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-42251
cert.pl/posts/2026/06/cve-2... WEB
https://cert.pl/posts/2026/06/CVE-2026-1958
kamsoft.pl/ks-somed WEB
https://kamsoft.pl/ks-somed

Frequently Asked Questions

What is CVE-2026-42251?
CVE-2026-42251 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-798: Use of Hard-coded Credentials.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-42251?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-42251?
CVE-2026-42251 is classified under CWE-798: Use of Hard-coded Credentials (The product contains hard-coded credentials, such as a password or cryptographic key.).
How can I check Maven dependencies for CVE-2026-42251?
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-vqmx-wc76-rxc7",
  "modified" : "2026-06-01T15:30:42Z",
  "published" : "2026-06-01T15:30:42Z",
  "aliases" : [ "CVE-2026-42251" ],
  "details" : "Use of hard-coded credentials in KS-SOMED allowed an unauthorized attacker access to FTP server that hosted the application's update packages. The attacker with these credentials could upload a malicious update file, which then may have been distributed and installed on client machines as a legitimate update.\n\nThis issue affects KS-SOMED with modules: KSPLUPDFTP.exe up to 30.00.00.056 and ANEKSKLIENT.EXE up to 29.00.02.026\n\nBeside removing the hard-coded credentials from the code and changing the update process, access granted by previously exposed credentials was limited to read-only.",
  "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: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-2026-42251"
  }, {
    "type" : "WEB",
    "url" : "https://cert.pl/posts/2026/06/CVE-2026-1958"
  }, {
    "type" : "WEB",
    "url" : "https://kamsoft.pl/ks-somed"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-798" ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-06-01T15:16:35Z"
  }
}