CVE-2026-82434: Software Security Vulnerability Vulnerability

CRITICAL
Advisory Identifier: GHSA-6fmw-8rj9-p9pg
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CVSS 6.5
CWE-522
Published
Advisory Summary

CVE-2026-82434 is a CRITICAL (CVSS 6.5) security vulnerability vulnerability (CWE-522: Insufficiently Protected Credentials) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product transmits or stores authentication credentials, but it uses an insecure method that is susceptible to unauthorized interception and/or retrieval.. Remediation is available in the latest vendor maintenance releases.

CVE-2026-82434 at a Glance

CVE Identifier CVE-2026-82434
GHSA Identifier GHSA-6fmw-8rj9-p9pg
Severity CRITICAL
CVSS v3.1 Base Score 6.5
CWE Classification CWE-522: Insufficiently Protected Credentials
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 6.5

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

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
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-2026-82434

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-2026-82434, 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-522: Insufficiently Protected Credentials, where the product transmits or stores authentication credentials, but it uses an insecure method that is susceptible to unauthorized interception and/or retrieval. 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

Description When ZooKeeper authentication is configured, Storm deliberately retains `storm.zookeeper.topology.auth.payload` in the topology configuration, because workers need it. Nimbus then served that configuration verbatim to any caller holding read-only topology permissions, so a user whose only grant was the ability to view a topology received its ZooKeeper credential. That credential is not read-only. The cluster state implementation uses write-capable ACLs for worker heartbeats, backpressure and error state, so a recipient can forge or remove that state for the topology concerned. It is not a write credential on assignments. The same advisory covers the submission client, which logged the generated payload at INFO on every submission that generated one, and the SASL handlers, which logged it at DEBUG. The credential therefore also reached any log aggregation or support bundle collected from the cluster. Mitigation Upgrade to 3.1.0, where the payload is removed from the configuration served to read-only callers and is no longer written to logs. Users who cannot upgrade immediately should rotate `storm.zookeeper.topology.auth.payload` for existing topologies, review retained logs and support bundles for the value, and restrict read-only topology permissions to trusted principals. Credit The ASF -- found using Claude agents to study the security of open-source projects, validated and reported by Apache Storm.

References

NVD — CVE-2026-82434 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-82434
lists.apache.org/thread/1t7hggrz59rd... WEB
https://lists.apache.org/thread/1t7hggrz59rdq792qm1pnkqj0ogm2szq
Software Security Information SECURITY
http://www.openwall.com/lists/oss-security/2026/09/13/14
Software Security Information SECURITY
http://www.openwall.com/lists/oss-security/2026/09/13/23

Frequently Asked Questions

What is CVE-2026-82434?
CVE-2026-82434 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-522: Insufficiently Protected Credentials.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-82434?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-82434?
CVE-2026-82434 has a CVSS v3.1 base score of 6.5 (CRITICAL) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.
What CWE is associated with CVE-2026-82434?
CVE-2026-82434 is classified under CWE-522: Insufficiently Protected Credentials (The product transmits or stores authentication credentials, but it uses an insecure method that is susceptible to unauthorized interception and/or retrieval.).
How can I check Maven dependencies for CVE-2026-82434?
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-6fmw-8rj9-p9pg",
  "modified" : "2026-09-14T21:31:40Z",
  "published" : "2026-09-14T15:32:49Z",
  "aliases" : [ "CVE-2026-82434" ],
  "details" : "Description\n\nWhen ZooKeeper authentication is configured, Storm deliberately retains\n`storm.zookeeper.topology.auth.payload` in the topology configuration, because workers need it. Nimbus then\nserved that configuration verbatim to any caller holding read-only topology permissions, so a user whose\nonly grant was the ability to view a topology received its ZooKeeper credential.\n\nThat credential is not read-only. The cluster state implementation uses write-capable ACLs for worker\nheartbeats, backpressure and error state, so a recipient can forge or remove that state for the topology\nconcerned. It is not a write credential on assignments.\n\nThe same advisory covers the submission client, which logged the generated payload at INFO on every\nsubmission that generated one, and the SASL handlers, which logged it at DEBUG. The credential therefore\nalso reached any log aggregation or support bundle collected from the cluster.\n\nMitigation\n\nUpgrade to 3.1.0, where the payload is removed from the configuration served to read-only callers and is no\nlonger written to logs.\n\nUsers who cannot upgrade immediately should rotate `storm.zookeeper.topology.auth.payload` for existing\ntopologies, review retained logs and support bundles for the value, and restrict read-only topology\npermissions to trusted principals.\n\nCredit\n\nThe ASF -- found using Claude agents to study the security of open-source projects, validated and reported by Apache Storm.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/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-2026-82434"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread/1t7hggrz59rdq792qm1pnkqj0ogm2szq"
  }, {
    "type" : "WEB",
    "url" : "http://www.openwall.com/lists/oss-security/2026/09/13/14"
  }, {
    "type" : "WEB",
    "url" : "http://www.openwall.com/lists/oss-security/2026/09/13/23"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-522" ],
    "severity" : "CRITICAL",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-09-14T15:17:10Z"
  }
}