1. Home
  2. Vulnerabilities
  3. CVE-2026-49326
6.5
MEDIUM CVSS 3.1
CVE-2026-49326
Apache HBase: Missing scanner instance owner check in thrift delegation service
Overview
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.

Details
INFO

Published Date :

July 24, 2026, 3:17 p.m.

Last Modified :

Oct. 24, 2026, 1:10 p.m.

Remotely Exploit :

Yes !

Source :

[email protected]
Impact
Affected Products

The following products are affected by CVE-2026-49326 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Apache hbase
: Total Affected Vendor : 1 | Products : 1
Scoring
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
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
Address authorization flaws in thrift and rest delegation services by upgrading Apache HBase.
  • 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
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.

Results are limited to the first 20 news articles due to potential performance issues.

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.

  • CVE Translated by [email protected]

    Oct. 24, 2026

    Action Type Old Value New Value
    Added Translation Title: Apache HBase de Apache Software Foundation, Description: Vulnerabilidad de autorización faltante en el servicio de delegación thrift y rest de Apache HBase. Una operación de escaneo en el servicio thrift/rest tiene 3 pasos: abrir, obtener (posiblemente múltiples veces), cerrar. El paso de apertura devolverá un ID que se pasará de vuelta al servidor para identificar las instancias del escáner almacenadas en el lado del servidor. Se omitió la verificación de propietario en los pasos de obtención y cierre, lo que significa que un usuario puede obtener filas del escáner que es abierto por otros usuarios, y cerrar escáneres que pertenecen a otros usuarios. Este problema afecta a Apache HBase: desde 3.0.0-alpha-1 hasta 3.0.0-beta-1, desde 2.6.0 hasta 2.6.5, desde 2.5.0 hasta 2.5.14, hasta 2.4.*. Se recomienda a los usuarios actualizar a la versión 3.0.0-beta-2, 2.6.6 y 2.5.15, lo que soluciona el problema.
  • 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
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CVSS
Vulnerability Scoring Details
Base CVSS Score: 6.5
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact