CVE-2026-86532
Received Received - Intake

Apache Tomcat JAAS Timing Attack and Username Enumeration

Publication date: 2026-11-10

Last updated on: 2026-11-10

Assigner: Apache Software Foundation

Description
The bundled JAAS login modules leak whether a username exists and compare credentials in a non-constant-time manner. A remote unauthenticated attacker can enumerate valid accounts and may infer credential material through timing analysis. Users are recommended to upgrade to version 10.3.0 or 11.0.0-M2, which fix the issue.

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Meta Information

Published
2026-11-10
Last Modified
2026-11-10
Generated
2026-11-10
EPSS Evaluated
N/A
NVD
CVE-2026-86532
EUVD
EUVD-2026-121213

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
apache jaas_login_modules 10.3.0
apache jaas_login_modules 11.0.0-m2

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-203 The product behaves differently or sends different responses under different circumstances in a way that is observable to an unauthorized actor.

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