CVE-2026-41081: Storm client Apache Storm's Improper Handling Of Vulnerability
MODERATECVE-2026-41081 is a MODERATE (CVSS 6.5) apache storm's improper handling of vulnerability (CWE-287: Improper Authentication) affecting Storm client libraries in the Maven ecosystem. The issue involves apache storm's improper handling of tls client authentication failure leads to anonymous principal assignment. Remediation is available by upgrading affected packages to version 2.8.7.
CVE-2026-41081 at a Glance
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:N/UI:N/S:U/C:L/I:L/A:N).
How to Fix CVE-2026-41081
To remediate this vulnerability, upgrade all affected Storm client dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.
<dependency>
<groupId>org.apache.storm</groupId>
<artifactId>storm-client</artifactId>
<version>2.8.7</version>
</dependency>Run the following command in your project directory to verify that all resolved dependencies use the patched release:
mvn dependency:tree -Dincludes=org.apache.stormHow to Check if You Are Affected
To determine whether your Java application is affected by CVE-2026-41081, inspect your build dependencies using the Maven Dependency Plugin:
mvn dependency:tree -Dincludes=org.apache.stormAnalyze the terminal output to locate any version of Storm client in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.8.7), your application is affected.
Note: The mvn dependency:tree -Dincludes=org.apache.storm 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-287: Improper Authentication, where when an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. In Storm client, 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
CVE-2026-41081 Affected Storm client Versions
1 component(s)| Product / Package | Ecosystem | Affected Versions | Fixed Version |
|---|---|---|---|
|
org.apache.storm:storm-client
|
Maven |
< 2.8.7
|
2.8.7
|
References
Frequently Asked Questions
What is CVE-2026-41081?
Which Storm client versions are affected?
What version fixes CVE-2026-41081?
Is storm-client affected?
What is the CVSS score of CVE-2026-41081?
What CWE is associated with CVE-2026-41081?
How can I check Maven dependencies for CVE-2026-41081?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-j2q8-xx3q-8fqh",
"modified" : "2026-05-05T22:06:26Z",
"published" : "2026-04-27T15:30:52Z",
"aliases" : [ "CVE-2026-41081" ],
"summary" : "Apache Storm's Improper Handling of TLS Client Authentication Failure Leads to Anonymous Principal Assignment",
"details" : "Improper Handling of TLS Client Authentication Failure Leading to Anonymous Principal Assignment in Apache Storm\n\nVersions Affected: up to 2.8.7\n\nDescription: When TLS transport is enabled in Apache Storm without requiring client certificate authentication (the default configuration), the TlsTransportPlugin assigns a fallback principal (CN=ANONYMOUS) if no client certificate is presented or if certificate verification fails. The underlying SSLPeerUnverifiedException is caught and suppressed rather than rejecting the connection.\n\nThis fail-open behavior means an unauthenticated client can establish a TLS connection and receive a valid principal identity. If the configured authorizer (e.g., SimpleACLAuthorizer) does not explicitly deny access to CN=ANONYMOUS, this may result in unauthorized access to Storm services. The condition is logged at debug level only, reducing visibility in production.\n\nImpact: Unauthenticated clients may be assigned a principal identity, potentially bypassing authorization in permissive or misconfigured environments.\n\nMitigation: Users should upgrade to 2.8.7 in which TLS authentication failures are handled in a fail-closed manner.\n\nUsers who cannot upgrade immediately should:\n- Enable mandatory client certificate authentication (nimbus.thrift.tls.client.auth.required: true)\n- Ensure authorization rules explicitly deny access to CN=ANONYMOUS\n- Review all ACL configurations for implicit default-allow behavior",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N"
} ],
"affected" : [ {
"package" : {
"ecosystem" : "Maven",
"name" : "org.apache.storm:storm-client"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "0"
}, {
"fixed" : "2.8.7"
} ]
} ]
} ],
"references" : [ {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-41081"
}, {
"type" : "PACKAGE",
"url" : "https://github.com/apache/storm"
}, {
"type" : "WEB",
"url" : "https://lists.apache.org/thread/plxx5l29dvplk5rwzdcq53rdfl6v4gs8"
}, {
"type" : "WEB",
"url" : "http://www.openwall.com/lists/oss-security/2026/04/25/3"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-287" ],
"severity" : "MODERATE",
"github_reviewed" : true,
"github_reviewed_at" : "2026-05-05T22:06:26Z",
"nvd_published_at" : "2026-04-27T14:16:48Z"
}
}