CVE-2026-49439: Openremote manager OpenRemote Read-only Asset Users Can Vulnerability

MODERATE
Advisory Identifier: GHSA-xj53-j257-hxvg
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CVSS 4.3
CWE-862
Published
Advisory Summary

CVE-2026-49439 is a MODERATE (CVSS 4.3) openremote read-only asset users can vulnerability (CWE-862: Missing Authorization) affecting Openremote manager libraries in the Maven ecosystem. The issue involves openremote read-only asset users can write predicted datapoints. Remediation is available by upgrading affected packages to version 1.24.1.

CVE-2026-49439 at a Glance

CVE Identifier CVE-2026-49439
GHSA Identifier GHSA-xj53-j257-hxvg
Severity MODERATE
CVSS v3.1 Base Score 4.3
CWE Classification CWE-862: Missing Authorization
Affected Product Openremote manager
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 4.3

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality None (C:N)
Integrity Low (I:L)
Availability None (A:N)

How to Fix CVE-2026-49439

To remediate this vulnerability, upgrade all affected Openremote manager dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

io.openremote:openremote-manager fixed: 1.24.1 
<dependency>
    <groupId>io.openremote</groupId>
    <artifactId>openremote-manager</artifactId>
    <version>1.24.1</version>
</dependency>
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

mvn dependency:tree -Dincludes=io.openremote

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2026-49439, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree -Dincludes=io.openremote

Analyze the terminal output to locate any version of Openremote manager in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.24.1), your application is affected.

Note: The mvn dependency:tree -Dincludes=io.openremote command inspects the resolved dependency graph declared in your project's POM files; it does not perform automated security scanning or inspect runtime dynamic classpaths. Always verify runtime container classpaths and shaded JARs.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-862: Missing Authorization, where the product does not perform an authorization check when an actor attempts to access a resource or perform an action. In Openremote manager, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

# Summary The predicted datapoint write endpoint allows users with only `read:assets` privileges to write predicted datapoints. The endpoint: ```text PUT /api/{realm}/asset/predicted/{assetId}/{attributeName} ``` accepts write requests from users lacking `write:assets`. The implementation appears to check `READ_ASSETS` while performing a write operation through: ```java assetPredictedDatapointService.updateValues(...) ``` # PoC A user was created with only: ```text read:assets ``` and without `write:assets`. The following request succeeded: ```http PUT /api/master/asset/predicted/4Fr8Pcp7iDjrEmoSUFolvT/temperature ``` Request body: ```json [{"x":1779199999001,"y":1337}] ``` Response: ```text HTTP/2 204 ``` Database verification confirmed the datapoint was written successfully: ```text entity_id: 4Fr8Pcp7iDjrEmoSUFolvT attribute_name: temperature value: 1337 ``` # Impact Users with read-only asset permissions can modify predicted datapoints for assets.

CVE-2026-49439 Affected Openremote manager Versions

1 component(s)
Fixed Versions:
1.24.1
Product / Package Ecosystem Affected Versions Fixed Version
io.openremote:openremote-manager
maven/io.openremote/openremote-manager
Maven
< 1.24.1
1.24.1

References

Openremote manager Source Repository REPOSITORY
https://github.com/openremote/openremote
GitHub Advisory / Wiki ADVISORY
https://github.com/openremote/openremote/security/advisories/GHSA-xj53-j257-hxvg
Security Fix Commit FIX COMMIT
https://github.com/openremote/openremote/commit/583dbbfb96076ba099be8729ddf506acf9e48325

Frequently Asked Questions

What is CVE-2026-49439?
CVE-2026-49439 is a security vulnerability in Openremote manager involving OpenRemote read-only asset users can write predicted datapoints under CWE-862: Missing Authorization.
Which Openremote manager versions are affected?
Affected versions include releases prior to 1.24.1 across affected packages: io.openremote:openremote-manager.
What version fixes CVE-2026-49439?
Upgrading to 1.24.1 (or the latest patched release for your respective branch) resolves the vulnerability.
Is openremote-manager affected?
Yes, io.openremote:openremote-manager is affected in releases prior to 1.24.1. Upgrade your dependency to 1.24.1 or later.
What is the CVSS score of CVE-2026-49439?
CVE-2026-49439 has a CVSS v3.1 base score of 4.3 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N.
What CWE is associated with CVE-2026-49439?
CVE-2026-49439 is classified under CWE-862: Missing Authorization (The product does not perform an authorization check when an actor attempts to access a resource or perform an action.).
How can I check Maven dependencies for CVE-2026-49439?
Run the dependency tree command: 'mvn dependency:tree -Dincludes=io.openremote'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-xj53-j257-hxvg",
  "modified" : "2026-07-06T16:52:35Z",
  "published" : "2026-07-06T16:52:35Z",
  "aliases" : [ "CVE-2026-49439" ],
  "summary" : "OpenRemote read-only asset users can write predicted datapoints",
  "details" : "# Summary\n\nThe predicted datapoint write endpoint allows users with only `read:assets` privileges to write predicted datapoints.\n\nThe endpoint:\n\n```text\nPUT /api/{realm}/asset/predicted/{assetId}/{attributeName}\n```\n\naccepts write requests from users lacking `write:assets`.\n\nThe implementation appears to check `READ_ASSETS` while performing a write operation through:\n\n```java\nassetPredictedDatapointService.updateValues(...)\n```\n\n# PoC\n\nA user was created with only:\n\n```text\nread:assets\n```\n\nand without `write:assets`.\n\nThe following request succeeded:\n\n```http\nPUT /api/master/asset/predicted/4Fr8Pcp7iDjrEmoSUFolvT/temperature\n```\n\nRequest body:\n\n```json\n[{\"x\":1779199999001,\"y\":1337}]\n```\n\nResponse:\n\n```text\nHTTP/2 204\n```\n\nDatabase verification confirmed the datapoint was written successfully:\n\n```text\nentity_id: 4Fr8Pcp7iDjrEmoSUFolvT\nattribute_name: temperature\nvalue: 1337\n```\n\n# Impact\n\nUsers with read-only asset permissions can modify predicted datapoints for assets.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "io.openremote:openremote-manager"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.24.1"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/openremote/openremote/security/advisories/GHSA-xj53-j257-hxvg"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/openremote/openremote/commit/583dbbfb96076ba099be8729ddf506acf9e48325"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/openremote/openremote"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-862" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-07-06T16:52:35Z",
    "nvd_published_at" : null
  }
}