CVE-2026-49326
Apache HBase: Missing scanner instance owner check in thrift delegation service
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.
INFO
Published Date :
July 24, 2026, 3:17 p.m.
Last Modified :
Aug. 6, 2026, 12:46 a.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | MEDIUM | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
Solution
- Upgrade to Apache HBase version 3.0.0-beta-2.
- Upgrade to Apache HBase version 2.6.6.
- Upgrade to Apache HBase version 2.5.15.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-49326.
| URL | Resource |
|---|---|
| https://lists.apache.org/thread/f4l4sjgwb9tb04cqnkpgl6gy3slgvcsj | Mailing List Vendor Advisory |
| http://www.openwall.com/lists/oss-security/2026/07/24/23 | Mailing List Third Party Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-49326 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-49326
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-49326 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-49326 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Aug. 06, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:apache:hbase:*:*:*:*:*:*:*:* versions up to (excluding) 2.5.15 *cpe:2.3:a:apache:hbase:*:*:*:*:*:*:*:* versions from (including) 2.6.0 up to (excluding) 2.6.6 *cpe:2.3:a:apache:hbase:3.0.0:alpha1:*:*:*:*:*:* *cpe:2.3:a:apache:hbase:3.0.0:alpha2:*:*:*:*:*:* *cpe:2.3:a:apache:hbase:3.0.0:alpha3:*:*:*:*:*:* *cpe:2.3:a:apache:hbase:3.0.0:alpha4:*:*:*:*:*:* *cpe:2.3:a:apache:hbase:3.0.0:beta1:*:*:*:*:*:* Added Reference Type Apache Software Foundation: https://lists.apache.org/thread/f4l4sjgwb9tb04cqnkpgl6gy3slgvcsj Types: Mailing List, Vendor Advisory Added Reference Type CVE: http://www.openwall.com/lists/oss-security/2026/07/24/23 Types: Mailing List, Third Party Advisory -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jul. 24, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N Added SSVC {'id': 'CVE-2026-49326', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-07-24T17:55:09.930930Z'} -
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Jul. 24, 2026
Action Type Old Value New Value Added Reference http://www.openwall.com/lists/oss-security/2026/07/24/23 -
New CVE Received by [email protected]
Jul. 24, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'Apache Software Foundation', 'product': 'Apache HBase', 'versions': [{'status': 'affected', 'version': '0', 'versionType': 'maven', 'lessThanOrEqual': '2.5.14'}, {'status': 'affected', 'version': '2.6-alpha', 'versionType': 'maven', 'lessThanOrEqual': '2.6.5'}, {'status': 'affected', 'version': '3-alpha', 'versionType': 'maven', 'lessThanOrEqual': '3.0.0-beta-1'}], 'packageName': 'org.apache.hbase:hbase-thrift', 'collectionURL': 'https://repo.maven.apache.org/maven2', 'defaultStatus': 'unaffected'}] Added 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. Added CWE CWE-862 Added Reference https://lists.apache.org/thread/f4l4sjgwb9tb04cqnkpgl6gy3slgvcsj