CVE-2026-49326
Received Received - Intake

Missing Authorization in Apache HBase Thrift/REST Services

Publication date: 2026-07-24

Last updated on: 2026-07-24

Assigner: Apache Software Foundation

Description
Missing Authorization vulnerability in Apache HBase thrift and rest delegation service. A scan operation in thrift/rest service has 3 steps, open, fetch(possible multiple times), close. The open step will return an id which will be passed back to server for identifying the scanner instances stored at server side. We missed the owner check in fetch and close steps which means a user can fetch rows from the scanner which is opened by other users, and close scanners which belongs to other users. This issue affects Apache HBase:from 3.0.0-alpha-1 through 3.0.0-beta-1, from 2.6.0 through 2.6.5, from 2.5.0 through 2.5.14, through 2.4.*. Users are recommended to upgrade to version 3.0.0-beta-2, 2.6.6 and 2.5.15, which fixes the issue.

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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-2026-49326
EUVD
EUVD-2026-48610

Affected Vendors & Products

Showing 4 associated CPEs
Vendor Product Version / Range
apache hbase From 3.0.0-alpha-1 (inc) to 3.0.0-beta-1 (inc)
apache hbase From 2.6.0 (inc) to 2.6.5 (inc)
apache hbase From 2.5.0 (inc) to 2.5.14 (inc)
apache hbase to 2.4.* (inc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-862 The product does not perform an authorization check when an actor attempts to access a resource or perform an action.

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Executive Summary

This is a Missing Authorization vulnerability in Apache HBase's thrift and rest delegation service. It involves a scan operation with three steps: open, fetch (multiple times), and close. The open step returns an ID to identify scanner instances on the server. The vulnerability allows users to fetch rows or close scanners belonging to other users because owner checks are missing in the fetch and close steps.

Detection Guidance

Detecting this vulnerability requires checking Apache HBase versions and monitoring thrift/rest service scanner operations. Check HBase version with 'hbase version' command. Inspect thrift/rest service logs for unauthorized scanner access attempts or scanner operations performed by unexpected users.

Impact Analysis

An attacker could exploit this to access or close scan operations initiated by other users, potentially exposing sensitive data or disrupting legitimate operations. This could lead to unauthorized data access or denial of service in the HBase cluster.

Compliance Impact

This vulnerability could violate compliance requirements such as GDPR (data protection) or HIPAA (health data privacy) by enabling unauthorized access to sensitive data. Organizations using affected HBase versions may face compliance violations and legal risks.

Mitigation Strategies

Immediately upgrade Apache HBase to fixed versions: 3.0.0-beta-2, 2.6.6, or 2.5.15. If immediate upgrade is not possible, restrict network access to thrift and rest services by blocking ports 9090 (rest) and 9095 (thrift) at the firewall level until patches are applied.

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