CVE-2026-45581: fabric-chaincode-java TLS Private Key Password Disclosed Vulnerability

MODERATE
Advisory Identifier: GHSA-wg5x-3g47-v38r
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CVSS 5.5
CWE-532
Published
Advisory Summary

CVE-2026-45581 is a MODERATE (CVSS 5.5) tls private key password disclosed vulnerability (CWE-532: Insertion of Sensitive Information into Log File) affecting fabric-chaincode-java libraries in the Maven ecosystem. The issue involves tls private key password disclosed in info startup logs in chaincode-as-a-service mode. Remediation is available by upgrading affected packages to version 2.5.10.

CVE-2026-45581 at a Glance

CVE Identifier CVE-2026-45581
GHSA Identifier GHSA-wg5x-3g47-v38r
Severity MODERATE
CVSS v3.1 Base Score 5.5
CWE Classification CWE-532: Insertion of Sensitive Information into Log File
Affected Product fabric-chaincode-java
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 5.5

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

Attack Vector Local (AV:L)
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-2026-45581

To remediate this vulnerability, upgrade all affected fabric-chaincode-java dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

org.hyperledger.fabric-chaincode-java:fabric-chaincode-shim fixed: 2.5.10 
<dependency>
    <groupId>org.hyperledger.fabric-chaincode-java</groupId>
    <artifactId>fabric-chaincode-shim</artifactId>
    <version>2.5.10</version>
</dependency>
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 -Dincludes=org.hyperledger.fabric-chaincode-java

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2026-45581, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree -Dincludes=org.hyperledger.fabric-chaincode-java

Analyze the terminal output to locate any version of fabric-chaincode-java in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.5.10), your application is affected.

Note: The mvn dependency:tree -Dincludes=org.hyperledger.fabric-chaincode-java 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-532: Insertion of Sensitive Information into Log File, where the product writes sensitive information to a log file. In fabric-chaincode-java, 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

When chaincode is deployed in chaincode-as-a-service mode with TLS enabled, the chaincode server INFO level logging includes the TLS private key password in plaintext. An attacker with access to the chaincode server logs could recover the TLS private key password. If the attacker can also obtain the TLS private key, they could impersonate the chaincode server. ### Recommendation - Update to the fixed version of the chaincode runtime. - Redact or remove existing logs that contain the TLS private key password. - Change the TLS private key password. ### Mitigation Impacted deployments can mitigate the vulnerability by restricting the logging level to WARNING or higher so that INFO level logs are not written.

CVE-2026-45581 Affected fabric-chaincode-java Versions

1 component(s)
Fixed Versions:
2.5.10
Product / Package Ecosystem Affected Versions Fixed Version
org.hyperledger.fabric-chaincode-java:fabric-chaincode-shim
maven/org.hyperledger.fabric-chaincode-java/fabric-chaincode-shim
Maven
≥ 2.3.1
< 2.5.10
2.5.10

References

GitHub Advisory / Wiki ADVISORY
https://github.com/hyperledger/fabric-chaincode-java/security/advisories/GHSA-wg5x-3g47-v38r
NVD — CVE-2026-45581 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-45581
fabric-chaincode-java Source Repository REPOSITORY
https://github.com/hyperledger/fabric-chaincode-java

Frequently Asked Questions

What is CVE-2026-45581?
CVE-2026-45581 is a security vulnerability in fabric-chaincode-java involving TLS Private Key Password Disclosed in INFO Startup Logs in Chaincode-as-a-Service Mode under CWE-532: Insertion of Sensitive Information into Log File.
Which fabric-chaincode-java versions are affected?
Affected versions include releases prior to 2.5.10 across affected packages: org.hyperledger.fabric-chaincode-java:fabric-chaincode-shim.
What version fixes CVE-2026-45581?
Upgrading to 2.5.10 (or the latest patched release for your respective branch) resolves the vulnerability.
Is fabric-chaincode-shim affected?
Yes, org.hyperledger.fabric-chaincode-java:fabric-chaincode-shim is affected in releases prior to 2.5.10. Upgrade your dependency to 2.5.10 or later.
What is the CVSS score of CVE-2026-45581?
CVE-2026-45581 has a CVSS v3.1 base score of 5.5 (MODERATE) with vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.
What CWE is associated with CVE-2026-45581?
CVE-2026-45581 is classified under CWE-532: Insertion of Sensitive Information into Log File (The product writes sensitive information to a log file.).
How can I check Maven dependencies for CVE-2026-45581?
Run the dependency tree command: 'mvn dependency:tree -Dincludes=org.hyperledger.fabric-chaincode-java'. 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-wg5x-3g47-v38r",
  "modified" : "2026-06-09T13:12:11Z",
  "published" : "2026-05-19T15:40:13Z",
  "aliases" : [ "CVE-2026-45581" ],
  "summary" : "fabric-chaincode-java: TLS Private Key Password Disclosed in INFO Startup Logs in Chaincode-as-a-Service Mode",
  "details" : "When chaincode is deployed in chaincode-as-a-service mode with TLS enabled, the chaincode server INFO level logging includes the TLS private key password in plaintext. An attacker with access to the chaincode server logs could recover the TLS private key password. If the attacker can also obtain the TLS private key, they could impersonate the chaincode server.\n\n### Recommendation\n\n- Update to the fixed version of the chaincode runtime.\n- Redact or remove existing logs that contain the TLS private key password.\n- Change the TLS private key password.\n\n### Mitigation\n\nImpacted deployments can mitigate the vulnerability by restricting the logging level to WARNING or higher so that INFO level logs are not written.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.hyperledger.fabric-chaincode-java:fabric-chaincode-shim"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "2.3.1"
      }, {
        "fixed" : "2.5.10"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 2.5.9"
    }
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/hyperledger/fabric-chaincode-java/security/advisories/GHSA-wg5x-3g47-v38r"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-45581"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/hyperledger/fabric-chaincode-java"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-532" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-05-19T15:40:13Z",
    "nvd_published_at" : "2026-06-08T17:16:44Z"
  }
}