CVE-2026-6823

Analyzed Analyzed - Analysis Complete

Insecure Default Configuration in HKUDS OpenHarness Allows Unauthorized Access

Publication date: 2026-04-21

Last updated on: 2026-05-07

Assigner: VulnCheck

Description

HKUDS OpenHarness prior to PR #147 remediation contains an insecure default configuration vulnerability where remote channels inherit allow_from = ["*"] permitting arbitrary remote senders to pass admission checks. Attackers who can reach the configured channel can bypass access controls and reach host-backed agent runtimes, potentially leading to unauthorized file disclosure and read access through default-enabled read-only tools.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-04-21

Last Modified

2026-05-07

Generated

2026-07-06

AI Q&A

2026-04-22

EPSS Evaluated

2026-07-05

NVD

CVE-2026-6823

Affected Vendors & Products

Vendor	Product	Version / Range
hkuds	openharness	to 0.1.7 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-276	During installation, installed file permissions are set to allow anyone to modify those files.

Attack-Flow Graph

Executive Summary

This vulnerability exists in HKUDS OpenHarness versions prior to the remediation in PR #147. It involves an insecure default configuration where remote channels inherit a setting allow_from = ["*"], which means any remote sender is permitted to pass admission checks.

As a result, attackers who can reach these configured channels can bypass access controls and gain access to host-backed agent runtimes.

This unauthorized access can potentially lead to unauthorized file disclosure and read access through default-enabled read-only tools.

Impact Analysis

The vulnerability allows remote attackers to bypass access controls and access host-backed agent runtimes without authorization.

This can lead to unauthorized disclosure of files and read access to sensitive information via default-enabled read-only tools.

Given the CVSS v3.1 base score of 8.2, the impact is considered high in terms of confidentiality, with potential limited impact on integrity and no impact on availability.

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