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EPSS 0.1%top 84%

CVE-2026-6819: CWE-276 Incorrect Default Permissions in HKUDS OpenHarness

0
High
VulnerabilityCVE-2026-6819cvecve-2026-6819cwe-276
Published: Tue Apr 21 2026 (04/21/2026, 19:41:16 UTC)
Source: CVE Database V5
Vendor/Project: HKUDS
Product: OpenHarness

Description

CVE-2026-6819 is a high-severity vulnerability in HKUDS OpenHarness prior to the remediation identified as PR #156. The issue involves incorrect default permissions that expose plugin lifecycle commands such as /plugin install, /plugin enable, /plugin disable, and /reload-plugins to remote senders. This exposure allows attackers who gain access through the channel layer to remotely manage plugin trust and activation state, potentially enabling unauthorized plugin installation and activation. The vulnerability has a CVSS 4. 0 base score of 8. 7, indicating a high impact on confidentiality, integrity, and availability. No official patch or remediation guidance is currently provided by the vendor, and no known exploits are reported in the wild. The product is not a cloud service, so remediation depends on vendor or user action. No affected countries are specified.

CVSS v4.0

Score 8.7high

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
None
User Interaction
Passive
Vuln. Confidentiality
High
Vuln. Integrity
High
Vuln. Availability
High
Subsq. Confidentiality
None
Subsq. Integrity
None
Subsq. Availability
None
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

AI-Powered Analysis

Machine-generated threat intelligence

AILast updated: 04/29/2026, 11:29:38 UTC

Technical Analysis

HKUDS OpenHarness versions prior to the fix referenced as PR #156 suffer from incorrect default permissions (CWE-276) that expose critical plugin lifecycle management commands to remote actors. These commands include installing, enabling, disabling plugins, and reloading plugins. Because these commands are accessible remotely without proper authentication or authorization controls, an attacker with channel layer access can manipulate plugin states, potentially installing or activating unauthorized plugins. This vulnerability is scored 8.7 on CVSS 4.0, reflecting network attack vector, low attack complexity, no privileges required, user interaction needed, and high impact on confidentiality, integrity, and availability. No official patch or remediation level is documented, and no exploits are known in the wild.

Potential Impact

The vulnerability allows remote attackers to manage plugin lifecycle commands without proper authorization, which can lead to unauthorized plugin installation and activation. This compromises system integrity and confidentiality by allowing potentially malicious plugins to be installed and executed. The high CVSS score reflects significant risk to affected systems.

Mitigation Recommendations

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official patch or remediation level is provided, users should monitor the vendor's communications for updates. Until a fix is available, restricting access to the channel layer and plugin management interfaces through network controls or other means may reduce exposure.

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Technical Details

Data Version
5.2
Assigner Short Name
VulnCheck
Date Reserved
2026-04-21T19:22:21.465Z
Cvss Version
4.0
State
PUBLISHED
Remediation Level
null

Threat ID: 69e7d78819fe3cd2cdf5b386

Added to database: 4/21/2026, 8:01:12 PM

Last enriched: 4/29/2026, 11:29:38 AM

Last updated: 6/5/2026, 6:40:26 AM

Views: 54

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