Apache HBase: Missing scanner instance owner check in thrift delegation service
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.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-49326
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 7 Nov 2026, 03:19 UTC · Revision 1
Source evidence
Apache HBase: Missing scanner instance owner check in thrift delegation service
core-osv · Original sourcePublished 24 Jul 2026, 14:56 UTC
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.
osv:CVE-2026-49326
Complete source record
{
"id": "219028074add01a7ef57933136794e1181fd05fbb1aa09187b3e4140738ef030",
"url": "https://osv.dev/vulnerability/CVE-2026-49326",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Apache HBase: Missing scanner instance owner check in thrift delegation service",
"summary": "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.",
"evidence": "osv:CVE-2026-49326",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2026-49326",
"aliases": [
"CVE-2026-49326"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/apache/hbase",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "1489aab3675f848300fea0a9cfc42fc26428cb49"
},
{
"introduced": "de99f8754135ea69adc39da48d2bc2b2710a5366"
},
{
"fixed": "d5f63f523c065f963992ea4e74db268d17816631"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:apache:hbase:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"fixed": "2.5.15"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:apache:hbase:*:*:*:*:*:*:*:*",
"range": [
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"introduced": "2.6.0"
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{
"fixed": "2.6.6"
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}
],
"versions": [
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"2.5.15RC0",
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"2.5.14RC1",
"rel/2.6.5",
"2.6.5RC1",
"2.6.5RC0",
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"2.6.4RC1",
"rel/2.5.13",
"2.5.13RC0",
"2.6.4RC0",
"rel/2.5.12",
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"2.6.3RC1",
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"rel/2.5.11",
"2.5.11RC1",
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"2.6.2RC1",
"2.6.2RC0",
"2.5.11RC0",
"rel/2.6.1",
"2.6.1RC1",
"2.6.1RC0",
"rel/2.5.10",
"2.5.10RC1",
"2.5.10RC0",
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"2.5.5",
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"2.5.4RC0",
"rel/2.5.3",
"2.5.3RC2",
"2.5.3RC1",
"2.5.3RC0",
"rel/2.5.2",
"2.5.2RC0",
"rel/2.5.1",
"2.5.1RC1",
"2.5.1RC0",
"2.5.0RC1",
"rel/2.5.0",
"2.5.0RC0",
"rel/2.0.0-beta-2",
"2.0.0-beta-2RC0.2",
"rel/2.0.0-beta-1",
"2.0.0-beta-1-RC1.7",
"2.0.0-beta-1-RC1.6",
"2.0.0-beta-1-RC1.5",
"2.0.0-beta-1-RC1.4",
"2.0.0-beta-1-RC1.3",
"2.0.0-beta-1-RC1.2",
"2.0.0-beta-1-RC1",
"2.0.0-beta-1-RC0",
"rel/2.0.0-alpha-3",
"2.0.0-alpha-3RC0.2",
"rel/2.0.0-alpha-2",
"2.0.0-alpha-2RC0",
"rel/2.0.0-alpha-1",
"2.0.0-alpha-1RC0"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-49326.json"
}
}
],
"modified": "2026-10-28T02:30:49.354056513Z",
"provider": "osv",
"references": [
"https://repo.maven.apache.org/maven2",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/49xxx/CVE-2026-49326.json",
"https://lists.apache.org/thread/f4l4sjgwb9tb04cqnkpgl6gy3slgvcsj",
"https://nvd.nist.gov/vuln/detail/CVE-2026-49326"
],
"provider_metadata": {
"cwe_ids": [
"CWE-862"
],
"cna_assigner": "apache",
"unresolved_ranges": [
{
"extracted_events": [
{
"range": [
{
"last_affected": "2.5.14"
},
{
"introduced": "2.6-alpha"
},
{
"last_affected": "2.6.5"
},
{
"introduced": "3-alpha"
},
{
"last_affected": "3.0.0-beta-1"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StandardRange"
}
]
}
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/49xxx/CVE-2026-49326.json"
}
},
"related_cves": [
{
"value": "CVE-2026-49326",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 517698,
"published_at": "2026-07-24T14:56:22.664+00:00"
}