CVE-2026-66144
Received Received - Intake

Remote Policy Reference DoS in Apache Ranger

Publication date: 2026-07-24

Last updated on: 2026-07-24

Assigner: Apache Software Foundation

Description
Although remote policy references are not retrieved during policy normalization, if they are manually retrieved via the API it can cause a denial of service attack if a huge policy is retrieved. Users are recommended to upgrade to version 3.2.3, which fixes this issue by imposing a default maximum size on data read from remote policy references.

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Meta Information

Published
2026-07-24
Last Modified
2026-07-24
Generated
2026-07-24
AI Q&A
2026-07-24
EPSS Evaluated
N/A
NVD
CVE-2026-66144
EUVD
EUVD-2026-48583

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
apache policy_normalization 3.2.3

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-400 The product does not properly control the allocation and maintenance of a limited resource.

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Executive Summary

This vulnerability involves a denial of service attack where a large policy retrieved via API causes system overload. It occurs because remote policy references are not size-limited during retrieval, even though they are not fetched during normal policy processing.

Detection Guidance

To detect this vulnerability, check the version of Apache Neethi running on your system. If it is below 3.2.3, the system is vulnerable. Use commands like 'neethi --version' or inspect package managers (e.g., 'rpm -qa | grep neethi' or 'dpkg -l | grep neethi'). Monitor API calls for remote policy retrievals that may fetch unusually large policies.

Impact Analysis

An attacker could exploit this by sending a request to retrieve a massive policy, causing the system to consume excessive resources and potentially crash or become unresponsive. This disrupts normal operations and may lead to service outages.

Compliance Impact

This vulnerability does not directly affect compliance with standards like GDPR or HIPAA as it is a denial of service issue related to policy normalization. However, if exploited, it could disrupt services handling sensitive data, potentially impacting compliance indirectly by causing service unavailability.

Mitigation Strategies

Upgrade to Apache version 3.2.3 or later to fix the issue by enforcing a maximum size limit on remote policy reference data.

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