CVE-2026-97888
Received Received - Intake

Session Fixation in Apache TomEE Embedded HTTP Server

Publication date: 2026-11-10

Last updated on: 2026-11-10

Assigner: Apache Software Foundation

Description
The embedded HTTP server does not clear the security identity established during a request before its worker thread handles the next request. A remote unauthenticated attacker can have their request processed with the identity of a previously authenticated user, gaining that user's privileges. Only applications served by the embedded HTTP server that authenticate programmatically or via basic authentication are affected. Users are recommended to block network access to the embedded HTTP server from untrusted clients, or to migrate to the Tomcat based TomEE distributions.

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Meta Information

Published
2026-11-10
Last Modified
2026-11-10
Generated
2026-11-10
AI Q&A
2026-11-10
EPSS Evaluated
N/A
NVD
CVE-2026-97888
EUVD
EUVD-2026-121258

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
apache tomee *

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-488 The product does not sufficiently enforce boundaries between the states of different sessions, causing data to be provided to, or used by, the wrong session.

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Executive Summary

This vulnerability involves an embedded HTTP server failing to clear a user's security identity after a request. As a result, a subsequent request processed by the same worker thread may retain the privileges of the previous user. This allows an unauthenticated remote attacker to impersonate an authenticated user and gain unauthorized access to privileged functions.

Impact Analysis

If you use an affected application served by the embedded HTTP server that authenticates users programmatically or via basic authentication, an attacker could gain elevated privileges. This may lead to unauthorized data access, modification, or control over the application depending on the impersonated user's permissions.

Compliance Impact

This vulnerability could lead to unauthorized access to sensitive data, violating confidentiality requirements in GDPR and HIPAA. Compliance may be compromised if attackers access protected health information or personal data, potentially resulting in legal penalties or data breach notifications.

Mitigation Strategies

Block network access to the embedded HTTP server from untrusted clients. Migrate to Tomcat-based TomEE distributions if possible.

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