CVE-2026-15811: Software Security Vulnerability Vulnerability

MODERATE
Advisory Identifier: GHSA-3p9p-8j59-v9h3
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CVSS 5.8
CWE-212
Published
Advisory Summary

CVE-2026-15811 is a MODERATE (CVSS 5.8) security vulnerability vulnerability (CWE-212: Improper Removal of Sensitive Information Before Storage or Transfer) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product stores, transfers, or shares a resource that contains sensitive information, but it does not properly remove that information before the product makes the resource available to unauthorized actors.. Remediation is available in the latest vendor maintenance releases.

CVE-2026-15811 at a Glance

CVE Identifier CVE-2026-15811
GHSA Identifier GHSA-3p9p-8j59-v9h3
Severity MODERATE
CVSS v3.1 Base Score 5.8
CWE Classification CWE-212: Improper Removal of Sensitive Information Before Storage or Transfer
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 5.8

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

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

How to Fix CVE-2026-15811

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-2026-15811, 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-212: Improper Removal of Sensitive Information Before Storage or Transfer, where the product stores, transfers, or shares a resource that contains sensitive information, but it does not properly remove that information before the product makes the resource available to unauthorized actors. 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

A vulnerability was found in kronosnet's (version <=1.34) cryptographic configuration management. The framework does not correctly zero-out or wipe sensitive memory segments after executing changes to its cryptographic configuration. This omission leaves raw encryption keys resident in memory after the associated structures are freed. A local attacker capable of leveraging memory disclosure techniques could exploit this flaw to retrieve the active encryption key, allowing them to decrypt cluster network communications or inject malicious packets to cause severe high-availability cluster instability.

References

NVD — CVE-2026-15811 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-15811
Software Security Information SECURITY
https://access.redhat.com/security/cve/CVE-2026-15811
bugzilla.redhat.com/show_bug.cgi WEB
https://bugzilla.redhat.com/show_bug.cgi?id=2500849

Frequently Asked Questions

What is CVE-2026-15811?
CVE-2026-15811 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-212: Improper Removal of Sensitive Information Before Storage or Transfer.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-15811?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-15811?
CVE-2026-15811 has a CVSS v3.1 base score of 5.8 (MODERATE) with vector string CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:L.
What CWE is associated with CVE-2026-15811?
CVE-2026-15811 is classified under CWE-212: Improper Removal of Sensitive Information Before Storage or Transfer (The product stores, transfers, or shares a resource that contains sensitive information, but it does not properly remove that information before the product makes the resource available to unauthorized actors.).
How can I check Maven dependencies for CVE-2026-15811?
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-3p9p-8j59-v9h3",
  "modified" : "2026-07-21T06:31:18Z",
  "published" : "2026-07-21T06:31:18Z",
  "aliases" : [ "CVE-2026-15811" ],
  "details" : "A vulnerability was found in kronosnet's (version <=1.34) cryptographic configuration management. The framework does not correctly zero-out or wipe sensitive memory segments after executing changes to its cryptographic configuration. This omission leaves raw encryption keys resident in memory after the associated structures are freed. A local attacker capable of leveraging memory disclosure techniques could exploit this flaw to retrieve the active encryption key, allowing them to decrypt cluster network communications or inject malicious packets to cause severe high-availability cluster instability.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:L"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-15811"
  }, {
    "type" : "WEB",
    "url" : "https://access.redhat.com/security/cve/CVE-2026-15811"
  }, {
    "type" : "WEB",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2500849"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-212" ],
    "severity" : "MODERATE",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-07-21T06:16:28Z"
  }
}