CVE-2026-50099: Software Security Vulnerability Vulnerability

MODERATE
Advisory Identifier: GHSA-ccf8-539p-4gc2
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CVSS 4.6
CWE-538
Published
Advisory Summary

CVE-2026-50099 is a MODERATE (CVSS 4.6) security vulnerability vulnerability (CWE-538: Insertion of Sensitive Information into Externally-Accessible File or Directory) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product places sensitive information into files or directories that are accessible to actors who are allowed to have access to the files, but not to the sensitive information.. Remediation is available in the latest vendor maintenance releases.

CVE-2026-50099 at a Glance

CVE Identifier CVE-2026-50099
GHSA Identifier GHSA-ccf8-539p-4gc2
Severity MODERATE
CVSS v3.1 Base Score 4.6
CWE Classification CWE-538: Insertion of Sensitive Information into Externally-Accessible File or Directory
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 4.6

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N).

Attack Vector Physical (AV:P)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity None (I:N)
Availability None (A:N)

How to Fix CVE-2026-50099

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-2026-50099, 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-538: Insertion of Sensitive Information into Externally-Accessible File or Directory, where the product places sensitive information into files or directories that are accessible to actors who are allowed to have access to the files, but not to the sensitive information. 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

During WiFi association, Naxclow device firmware prints the host network’s SSID, PSK, and negotiated WPA keys in cleartext to an exposed UART console on production hardware. The UART pads are labeled, run with default serial settings, and drop to an interactive RT-Thread shell that permits arbitrary memory reads, enabling full firmware extraction. An attacker with brief physical access, common for outdoor-mounted devices, can therefore recover WiFi credentials and bootstrap firmware-side attacks.

References

NVD — CVE-2026-50099 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-50099
Software Source Repository REPOSITORY
https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-162-02.json
www.cisa.gov/news-events/ics-adv... WEB
https://www.cisa.gov/news-events/ics-advisories/icsa-26-162-02

Frequently Asked Questions

What is CVE-2026-50099?
CVE-2026-50099 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-538: Insertion of Sensitive Information into Externally-Accessible File or Directory.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-50099?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-50099?
CVE-2026-50099 has a CVSS v3.1 base score of 4.6 (MODERATE) with vector string CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
What CWE is associated with CVE-2026-50099?
CVE-2026-50099 is classified under CWE-538: Insertion of Sensitive Information into Externally-Accessible File or Directory (The product places sensitive information into files or directories that are accessible to actors who are allowed to have access to the files, but not to the sensitive information.).
How can I check Maven dependencies for CVE-2026-50099?
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-ccf8-539p-4gc2",
  "modified" : "2026-06-12T21:31:44Z",
  "published" : "2026-06-12T21:31:44Z",
  "aliases" : [ "CVE-2026-50099" ],
  "details" : "During WiFi association, Naxclow device firmware prints the host network’s SSID, PSK, and negotiated WPA keys in cleartext to an exposed UART console on production hardware. The UART pads are labeled, run with default serial settings, and drop to an interactive RT-Thread shell that permits arbitrary memory reads, enabling full firmware extraction. An attacker with brief physical access, common for outdoor-mounted devices, can therefore recover WiFi credentials and bootstrap firmware-side attacks.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:P/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-2026-50099"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-162-02.json"
  }, {
    "type" : "WEB",
    "url" : "https://www.cisa.gov/news-events/ics-advisories/icsa-26-162-02"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-538" ],
    "severity" : "MODERATE",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-06-12T19:16:29Z"
  }
}