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The following commit(s) were added to refs/heads/master by this push:
     new 577942f9386 HBASE-30130 Add a security-model section to the website 
(#8170)
577942f9386 is described below

commit 577942f938673aeabf99521b542de668c6a89d5f
Author: Andrew Purtell <[email protected]>
AuthorDate: Fri May 1 14:43:11 2026 -0700

    HBASE-30130 Add a security-model section to the website (#8170)
    
    Signed-off-by: Nihal Jain <[email protected]>
    Reviewed-by: Arnout Engelen <[email protected]>
    Reviewed-by: Yurii Palamarchuk <[email protected]>
---
 hbase-website/app/components/links.ts              |   4 +
 .../docs/_mdx/(multi-page)/security/index.mdx      |   8 ++
 .../app/pages/_landing/security-model/content.md   | 139 +++++++++++++++++++++
 .../app/pages/_landing/security-model/index.tsx    |  24 ++++
 hbase-website/app/routes.ts                        |   3 +-
 .../app/routes/_landing/security-model.tsx         |  34 +++++
 6 files changed, 211 insertions(+), 1 deletion(-)

diff --git a/hbase-website/app/components/links.ts 
b/hbase-website/app/components/links.ts
index 68764015d80..55e793e0dbe 100644
--- a/hbase-website/app/components/links.ts
+++ b/hbase-website/app/components/links.ts
@@ -62,6 +62,10 @@ export const projectLinks: LinkType[] = [
     label: "Code of Conduct",
     to: "/code-of-conduct"
   },
+  {
+    label: "Security Model",
+    to: "/security-model"
+  },
   {
     label: "Export Control",
     to: "/export-control"
diff --git 
a/hbase-website/app/pages/_docs/docs/_mdx/(multi-page)/security/index.mdx 
b/hbase-website/app/pages/_docs/docs/_mdx/(multi-page)/security/index.mdx
index 29b519a8505..b67579cbcf0 100644
--- a/hbase-website/app/pages/_docs/docs/_mdx/(multi-page)/security/index.mdx
+++ b/hbase-website/app/pages/_docs/docs/_mdx/(multi-page)/security/index.mdx
@@ -19,3 +19,11 @@ If you wish to send an encrypted report, you can use the GPG 
details provided fo
   which allows anyone to send messages, but restricts who can read them. 
Someone on that list will
   contact you to follow up on your report.
 </Callout>
+
+<Callout type="info">
+
+**Security Model**
+
+Before reporting a security issue, please review the [Apache HBase Security 
Model](/security-model) page, which describes the project's security 
assumptions, trust boundaries, and what constitutes a valid vulnerability 
report.
+
+</Callout>
diff --git a/hbase-website/app/pages/_landing/security-model/content.md 
b/hbase-website/app/pages/_landing/security-model/content.md
new file mode 100644
index 00000000000..98068c1ee87
--- /dev/null
+++ b/hbase-website/app/pages/_landing/security-model/content.md
@@ -0,0 +1,139 @@
+<!--
+Licensed to the Apache Software Foundation (ASF) under one
+or more contributor license agreements.  See the NOTICE file
+distributed with this work for additional information
+regarding copyright ownership.  The ASF licenses this file
+to you under the Apache License, Version 2.0 (the
+"License"); you may not use this file except in compliance
+with the License.  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+-->
+
+# Security Model
+
+This page describes the security model of Apache HBase. It details the 
assumptions and guarantees the project makes with respect to security. It is 
intended to help operators deploy HBase safely, to help security researchers 
understand what constitutes a legitimate vulnerability, and to help the [Apache 
Security Team](https://www.apache.org/security/) efficiently triage incoming 
reports.
+
+This page was created following the [ASF recommendation for documenting 
project security 
models](https://cwiki.apache.org/confluence/display/SECURITY/Documenting+your+security+model).
+
+## Reporting Security Vulnerabilities
+
+To report an undisclosed, sensitive security vulnerability in Apache HBase, 
please send your report privately via email to the Apache Software Foundation's 
security team at [[email protected]](mailto:[email protected]). Please do 
not use JIRA or any public channel for security reports.
+
+HBase follows the [Apache Software Foundation's vulnerability handling 
policy](https://www.apache.org/security/).
+
+## Assumption: Operator-Secured Production Deployments
+
+HBase requires operators to configure authentication and authorization for 
production deployments. This is the foundational assumption of the HBase 
security model.
+
+HBase ships with a default configuration that does not enable authentication 
or authorization. This default exists solely to aid developers, testing, and 
CI/CD environments. It does not imply under any circumstances that deploying or 
running HBase without security is safe or desirable for production use.
+
+No realistic production deployment runs HBase without security configured. The 
HBase documentation provides [comprehensive guidance on configuring 
security](/docs/security), including Kerberos authentication, SASL, Access 
Control Lists (ACLs), and visibility labels.
+
+Vulnerability reports that assume or require an insecure configuration as part 
of an attack chain are not valid security reports. Such reports describe the 
expected behavior of an intentionally unsecured configuration, not a security 
flaw.
+
+## Trust Boundaries
+
+### Network Perimeter
+
+HBase is designed for deployment within a trusted network perimeter, such as a 
private datacenter network or a properly configured cloud VPC. HBase services 
should not be directly exposed to the public internet.
+
+Operators are responsible for ensuring appropriate network-level controls 
(firewalls, security groups, network segmentation) are in place around the 
HBase cluster.
+
+### Cluster-Internal Trust
+
+All HBase server-side processes, such as the HMaster and RegionServers, and 
their communication with ZooKeeper and HDFS, trust each other within a properly 
configured cluster. Compromising any one of these processes is effectively 
equivalent to compromising the entire cluster. These are all components of a 
single distributed system that must cooperate to function.
+
+Inter-process authentication is enforced via Kerberos/SASL, ensuring only 
legitimate cluster members can participate.
+
+### HDFS as Trusted Storage
+
+HBase relies on HDFS or compatible distributed filesystem, or S3 or S3-alike 
cloud object storage, as its persistent storage layer. HBase assumes that the 
underlying storage layer access controls are correctly configured and that the 
storage layer is part of the same trust domain. An attacker with direct write 
access to the underlying storage layer can corrupt or manipulate HBase data 
regardless of HBase-level access controls.
+
+### Client Trust Boundary
+
+When authentication and authorization are configured:
+
+- **Authentication** (Kerberos/SASL) verifies client identity before any 
operations are permitted.
+- **Authorization** (ACLs) controls which authenticated users can perform 
which operations on which resources.
+- Unauthenticated clients are rejected.
+
+When authentication is not configured, which is only recommended for 
development or test environments, any client that can reach HBase over the 
network can perform any operation. This is expected and intentional for that 
configuration.
+
+## Gateway Services
+
+The REST and Thrift gateways are optional services that provide HTTP and 
Thrift protocol access to HBase. In their default configuration, these gateways 
do not perform authentication. For production use, operators must configure 
authentication on these gateways (SPNEGO/Kerberos for REST, SASL for Thrift) 
and/or restrict network access to them. See [Secure Client 
Access](/docs/security/client-access) for detailed configuration instructions. 
The gateways inherit the same trust model as the [...]
+
+Reports about unauthenticated access through gateways that have not been 
configured for authentication describe expected behavior, not a security flaw.
+
+## Coprocessors
+
+Coprocessors are a powerful extension mechanism that allows custom code to 
execute within HBase server processes. Loading a coprocessor is equivalent to 
granting full server-level access. Coprocessor code runs in the same JVM as the 
HBase server process with the same privileges. This is by design. Coprocessors 
are intended for trusted server-side extensions.
+Operators control which coprocessors are loaded through server-side 
configuration (`hbase.coprocessor.region.classes`, 
`hbase.coprocessor.master.classes`, `hbase.coprocessor.regionserver.classes`) 
and/or through table descriptors. The `CoprocessorWhitelistMasterObserver` can 
be used to restrict which coprocessor JARs may be loaded.
+
+When authorization is configured, only users with appropriate permissions can 
modify table descriptors, and therefore only authorized users can affect 
coprocessor loading via table schema changes. The ability to load coprocessors 
via table descriptors is a feature. When access to table schema modification is 
restricted by ACLs, as it must be in production, this is not a vulnerability.
+
+## Web UIs
+
+The HBase server web UIs are administrative monitoring interfaces. They are 
designed for use within the trusted network and are helpful for operators and 
developers.
+
+Information exposed through the web UIs, such as software version, 
configuration properties, table metadata, and operational metrics, is not 
considered sensitive within HBase's security model because these interfaces are 
expected to be accessible only within the trusted network perimeter.
+
+The web UI can optionally be configured with 
[SPNEGO](/docs/security/web-ui#using-spnego-for-kerberos-authentication-with-web-uis)
 or [LDAP](/docs/security/web-ui#using-ldap-authentication-with-web-uis) 
authentication. Additionally, privileged servlets — including logs, server 
configuration, metrics, and other administrative endpoints — can be restricted 
to designated administrators. Both SPNEGO and LDAP support defining 
administrators who have exclusive access to these servlets. See [De [...]
+
+## What Is Considered a Vulnerability
+
+The following categories of issues are considered valid security 
vulnerabilities and should be reported to 
[[email protected]](mailto:[email protected]):
+
+- **Authentication bypass**: Circumventing configured Kerberos/SASL 
authentication to gain access without valid credentials.
+- **Authorization bypass or privilege escalation**: An authenticated user 
performing operations beyond their granted ACL permissions, including gaining 
administrative or superuser capabilities.
+- **Data corruption or loss**: Unauthorized modification or deletion of data 
by a user who should not have write access (when ACLs are configured).
+- **Cross-user data access**: An authenticated user accessing another user's 
data in violation of configured ACLs or visibility labels.
+- **Remote code execution**: Achieving arbitrary code execution by an 
authenticated, non-administrative user when coprocessor loading is properly 
restricted.
+- **Credential exposure in logs**: Server logs containing authentication 
credentials, secrets, or other sensitive material accessible to users who 
should not have access to them.
+
+## What Is NOT Considered a Vulnerability
+
+The following categories of reports do not constitute security vulnerabilities 
in Apache HBase:
+
+- **Behavior in unsecured configurations**: Any issue that requires 
authentication and/or authorization to be unconfigured as a prerequisite. The 
default configuration is for development only, and running it in production is 
an operator error, not a vulnerability.
+- **Unauthenticated access to unconfigured gateways**: The REST and Thrift 
gateways operating without authentication when authentication has not been 
configured.
+- **Administrative actions by authorized administrators**: Superusers and 
global administrators can, by design, perform any operation in the cluster. 
This includes loading coprocessors, modifying table schemas, and accessing all 
data.
+- **Access requiring operator-level cluster configuration changes**: Issues 
that require modifying `hbase-site.xml` or other server configuration files 
require host-level access, which is outside the HBase security boundary.
+- **Information disclosure via administrative interfaces on trusted 
networks**: Version information, configuration details, or metrics visible in 
the web UIs when accessed from within the trusted network.
+- **Version discovery by unauthenticated users**: Version information is not 
considered secret within the HBase security model.
+- **Username enumeration**: HBase relies on external authentication systems, 
such as Kerberos or LDAP, for identity management. Username enumeration is an 
authentication-layer concern and not an HBase vulnerability.
+- **Exposure of services on untrusted networks**: Placing HBase services 
directly on the public internet without firewalls or VPNs is an operator 
misconfiguration and not an HBase vulnerability.
+
+## Security Hardening
+
+The HBase project welcomes reports about potential security hardening 
improvements, even when the behavior described does not fall inside the formal 
vulnerability criteria above. Such reports are valuable and will be considered 
for implementation as security improvements. Patches are always welcome! Please 
use [JIRA](https://issues.apache.org/jira/browse/HBASE) for hardening 
suggestions, not the private security list, as these are by definition not 
vulnerability disclosures.
+
+Examples of welcome hardening suggestions include:
+
+- Improvements to documentation to make security expectations and 
configuration options clearer.
+- Improvements to default configurations that reduce risk of operator 
misconfiguration.
+- Better input validation that, while not exploitable in a secured deployment, 
improves robustness.
+- Clearer warnings emitted at startup or in logs when security features are 
not configured, or are improperly configured.
+- Additional security controls that would enhance security when enabled.
+
+## Transport Encryption
+
+Transport-level encryption (TLS/SSL) for RPC, web UIs, and gateways is 
supported and documented but is optional in the security model. Whether 
transport encryption is required depends on the network environment. Within a 
physically secured private datacenter, operators may reasonably choose not to 
encrypt intra-cluster traffic. In cloud environments or across network 
boundaries, transport encryption should be configured. See [TLS 
Configuration](/docs/security/tls) for details.
+
+The decision to use or not use transport encryption is an operational choice 
that depends on the deployment environment and does not affect the 
authentication and authorization requirements for production.
+
+## Further Reading
+
+- [Securing Apache HBase](/docs/security) — Comprehensive guide to configuring 
HBase security
+- [Secure Client Access](/docs/security/client-access) — Kerberos, SASL, REST 
gateway, and Thrift gateway authentication
+- [Securing Access to Your Data](/docs/security/data-access) — ACLs, 
visibility labels, and encryption at rest
+- [ACL Matrix](/docs/acl-matrix) — Detailed mapping of HBase operations to 
required permissions
+- [Security Configuration Example](/docs/security/example) — End-to-end 
example of a secure HBase configuration
+- [Apache Software Foundation Security 
Policy](https://www.apache.org/security/) — ASF-wide security policy
diff --git a/hbase-website/app/pages/_landing/security-model/index.tsx 
b/hbase-website/app/pages/_landing/security-model/index.tsx
new file mode 100644
index 00000000000..548961ca154
--- /dev/null
+++ b/hbase-website/app/pages/_landing/security-model/index.tsx
@@ -0,0 +1,24 @@
+//
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+import { MdLayout } from "@/components/mdx-components";
+import Content from "./content.md";
+
+export function SecurityModelPage() {
+  return <MdLayout Content={Content} className="mt-12" />;
+}
diff --git a/hbase-website/app/routes.ts b/hbase-website/app/routes.ts
index e66051c7f16..4d43c3e384d 100644
--- a/hbase-website/app/routes.ts
+++ b/hbase-website/app/routes.ts
@@ -32,7 +32,8 @@ export default [
     route("source-repository", "routes/_landing/source-repository.tsx"),
     route("acid-semantics", "routes/_landing/acid-semantics.tsx"),
     route("news", "routes/_landing/news.tsx"),
-    route("export-control", "routes/_landing/export-control.tsx")
+    route("export-control", "routes/_landing/export-control.tsx"),
+    route("security-model", "routes/_landing/security-model.tsx")
   ]),
   // Docs
   layout("./pages/_docs/docs-layout.tsx", [route("docs/*", 
"routes/_docs/docs.tsx")]),
diff --git a/hbase-website/app/routes/_landing/security-model.tsx 
b/hbase-website/app/routes/_landing/security-model.tsx
new file mode 100644
index 00000000000..48e2fa67cb3
--- /dev/null
+++ b/hbase-website/app/routes/_landing/security-model.tsx
@@ -0,0 +1,34 @@
+//
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+import type { Route } from "./+types/security-model";
+import { SecurityModelPage } from "@/pages/_landing/security-model";
+
+export function meta({}: Route.MetaArgs) {
+  return [
+    { title: "Security Model - Apache HBase" },
+    {
+      name: "description",
+      content: "Apache HBase security model: assumptions, trust boundaries, 
and what constitutes a valid security vulnerability report."
+    }
+  ];
+}
+
+export default function SecurityModel() {
+  return <SecurityModelPage />;
+}

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