CVE-2026-49326

Medium

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.

SeverityMedium
CVSS6.5
Exploit probability42. percentile0.5%
ProductApache Hbase
PublishedJul 24, 2026
First seenJul 24, 2026

How to fix

Update
  • apache hbase2.5.15, 2.6.6 or later

Affected products

ProductAffected versionsFixed in
apache hbasev < 2.5.15, 2.6.0 ≤ v < 2.6.6, 3.0.02.5.15, 2.6.6

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