CVE-2026-19244: Software Security Vulnerability Vulnerability

LOW
Advisory Identifier: GHSA-qwp6-wxvx-2jc8
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CVSS 4.7
CWE-266
Published
Advisory Summary

CVE-2026-19244 is a LOW (CVSS 4.7) security vulnerability vulnerability (CWE-266: Incorrect Privilege Assignment) affecting Software libraries in the Maven ecosystem. The weakness occurs when a product incorrectly assigns a privilege to a particular actor, creating an unintended sphere of control for that actor.. Remediation is available in the latest vendor maintenance releases.

CVE-2026-19244 at a Glance

CVE Identifier CVE-2026-19244
GHSA Identifier GHSA-qwp6-wxvx-2jc8
Severity LOW
CVSS v3.1 Base Score 4.7
CWE Classification CWE-266: Incorrect Privilege Assignment
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 4.7

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

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

How to Fix CVE-2026-19244

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

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

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2026-19244, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree

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

Note: The mvn dependency:tree 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-266: Incorrect Privilege Assignment, where a product incorrectly assigns a privilege to a particular actor, creating an unintended sphere of control for that actor. In Software, 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

A vulnerability was detected in HKUDS nanobot up to 0.2.1. The affected element is the function connect_mcp_servers of the file nanobot/agent/tools/mcp.py of the component MCP enabledTools Scope Handler. Performing a manipulation results in improper access controls. The attack is possible to be carried out remotely. The exploit is now public and may be used. Upgrading to version 0.3.0 is sufficient to fix this issue. The patch is named 4436. You should upgrade the affected component. Multiple issues were reported to the project. They reacted with a high level of professionalism and kindness: "Both reports describe the same root cause: MCP resource and prompt wrappers could be registered outside the intended enabledTools scope. The registration boundary was corrected".

References

vuldb.com/vuln/386998/cti WEB
https://vuldb.com/vuln/386998/cti
NVD — CVE-2026-19244 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-19244
Software Source Repository REPOSITORY
https://github.com/HKUDS/nanobot/issues/4435
Software Source Repository REPOSITORY
https://github.com/HKUDS/nanobot/pull/4436
Software Source Repository REPOSITORY
https://gist.github.com/YLChen-007/3de5f50d167a878f7530f57ed018d508
Software Source Repository REPOSITORY
https://github.com/HKUDS/nanobot
Software Release RELEASE
https://github.com/HKUDS/nanobot/releases/tag/v0.3.0
vuldb.com/cve/cve-2026-19244 WEB
https://vuldb.com/cve/CVE-2026-19244
vuldb.com/submit/865116 WEB
https://vuldb.com/submit/865116
vuldb.com/submit/865118 WEB
https://vuldb.com/submit/865118
vuldb.com/vuln/386998 WEB
https://vuldb.com/vuln/386998

Frequently Asked Questions

What is CVE-2026-19244?
CVE-2026-19244 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-266: Incorrect Privilege Assignment.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-19244?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-19244?
CVE-2026-19244 has a CVSS v3.1 base score of 4.7 (LOW) with vector string CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L.
What CWE is associated with CVE-2026-19244?
CVE-2026-19244 is classified under CWE-266: Incorrect Privilege Assignment (A product incorrectly assigns a privilege to a particular actor, creating an unintended sphere of control for that actor.).
How can I check Maven dependencies for CVE-2026-19244?
Run the dependency tree command: 'mvn dependency:tree'. 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 
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  "id" : "GHSA-qwp6-wxvx-2jc8",
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  "published" : "2026-08-07T21:30:39Z",
  "aliases" : [ "CVE-2026-19244" ],
  "details" : "A vulnerability was detected in HKUDS nanobot up to 0.2.1. The affected element is the function connect_mcp_servers of the file nanobot/agent/tools/mcp.py of the component MCP enabledTools Scope Handler. Performing a manipulation results in improper access controls. The attack is possible to be carried out remotely. The exploit is now public and may be used. Upgrading to version 0.3.0 is sufficient to fix this issue. The patch is named 4436. You should upgrade the affected component. Multiple issues were reported to the project. They reacted with a high level of professionalism and kindness: \"Both reports describe the same root cause: MCP resource and prompt wrappers could be registered outside the intended enabledTools scope. The registration boundary was corrected\".",
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  } ],
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  "database_specific" : {
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    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-08-07T21:17:27Z"
  }
}