CVE-2026-6819
HKUDS OpenHarness Plugin Management Command Exposure
Description
HKUDS OpenHarness prior to PR #156 remediation exposes plugin lifecycle commands including /plugin install, /plugin enable, /plugin disable, and /reload-plugins to remote senders by default. Attackers who gain access through the channel layer can remotely manage plugin trust and activation state, enabling unauthorized plugin installation and activation on the system.
INFO
Published Date :
April 21, 2026, 8:17 p.m.
Last Modified :
May 7, 2026, 8:28 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 3.1 | HIGH | [email protected] | ||||
| CVSS 4.0 | HIGH | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 4.0 | HIGH | [email protected] |
Solution
- Update OpenHarness to version above PR #156.
- Restrict access to plugin management commands.
- Validate plugin installation and activation.
- Review existing plugin configurations.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-6819.
| URL | Resource |
|---|---|
| https://github.com/HKUDS/OpenHarness/commit/59017e09880fcf9a6f60456a84fb982900b2c0b2 | Patch |
| https://github.com/HKUDS/OpenHarness/pull/156 | Exploit Issue Tracking Patch |
| https://github.com/HKUDS/OpenHarness/releases/tag/v0.1.7 | Release Notes |
| https://www.vulncheck.com/advisories/hkuds-openharness-plugin-management-command-exposure | Third Party Advisory |
| https://github.com/HKUDS/OpenHarness/pull/156 | Exploit Issue Tracking Patch |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-6819 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-6819
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-6819 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-6819 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
May. 07, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:hkuds:openharness:*:*:*:*:*:*:*:* versions up to (excluding) 0.1.7 Added Reference Type VulnCheck: https://github.com/HKUDS/OpenHarness/commit/59017e09880fcf9a6f60456a84fb982900b2c0b2 Types: Patch Added Reference Type VulnCheck: https://github.com/HKUDS/OpenHarness/pull/156 Types: Exploit, Issue Tracking, Patch Added Reference Type VulnCheck: https://github.com/HKUDS/OpenHarness/releases/tag/v0.1.7 Types: Release Notes Added Reference Type VulnCheck: https://www.vulncheck.com/advisories/hkuds-openharness-plugin-management-command-exposure Types: Third Party Advisory Added Reference Type CISA-ADP: https://github.com/HKUDS/OpenHarness/pull/156 Types: Exploit, Issue Tracking, Patch -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Apr. 22, 2026
Action Type Old Value New Value Added Reference https://github.com/HKUDS/OpenHarness/pull/156 -
New CVE Received by [email protected]
Apr. 21, 2026
Action Type Old Value New Value Added Description HKUDS OpenHarness prior to PR #156 remediation exposes plugin lifecycle commands including /plugin install, /plugin enable, /plugin disable, and /reload-plugins to remote senders by default. Attackers who gain access through the channel layer can remotely manage plugin trust and activation state, enabling unauthorized plugin installation and activation on the system. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CVSS V3.1 AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Added CWE CWE-276 Added Reference https://github.com/HKUDS/OpenHarness/commit/59017e09880fcf9a6f60456a84fb982900b2c0b2 Added Reference https://github.com/HKUDS/OpenHarness/pull/156 Added Reference https://github.com/HKUDS/OpenHarness/releases/tag/v0.1.7 Added Reference https://www.vulncheck.com/advisories/hkuds-openharness-plugin-management-command-exposure