CVE-2026-73101
Received Received - Intake

Information Disclosure in Apache Juneau

Publication date: 2026-11-05

Last updated on: 2026-11-05

Assigner: Apache Software Foundation

Description
Generation of Error Message Containing Sensitive Information vulnerability in Apache Juneau. The REST server sends the internal exception class and message to clients in a "Thrown" response header on every error response, and can include internal exception messages in the error body, even when stack-trace rendering is disabled. This reveals implementation details to remote clients. This issue affects Apache Juneau: through 9.2.0. Users are recommended to upgrade to version 9.2.1, which fixes the issue.

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Meta Information

Published
2026-11-05
Last Modified
2026-11-05
Generated
2026-11-05
AI Q&A
2026-11-05
EPSS Evaluated
N/A
NVD
CVE-2026-73101
EUVD
EUVD-2026-117410

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
Apache Software Foundation Apache Juneau 0

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-209 The product generates an error message that includes sensitive information about its environment, users, or associated data.

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Executive Summary

This vulnerability in Apache Juneau involves the REST server exposing sensitive internal exception details to clients. It sends internal exception class names and messages in a 'Thrown' response header and error body, even when stack-trace rendering is disabled. This reveals implementation details to remote users.

Detection Guidance

Check HTTP responses from Apache Juneau REST servers for a 'Thrown' response header containing internal exception details or error bodies exposing implementation information.

Impact Analysis

Attackers could exploit this to gain insights into the internal workings of the application, such as error handling logic or system architecture. This information could be used to craft more targeted attacks or identify weaknesses in the system.

Compliance Impact

This vulnerability could potentially violate compliance with GDPR and HIPAA by exposing sensitive internal exception details to remote clients. Under GDPR, unauthorized disclosure of such information may constitute a breach of data protection principles. For HIPAA, revealing implementation details could compromise protected health information if exceptions relate to healthcare data processing.

Mitigation Strategies

Upgrade Apache Juneau to version 9.2.1 or later to address the vulnerability.

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