CVE-2026-6819

Name: CVE-2026-6819
Creator: NVD / NIST
Published: 2026-04-21T20:17:05.78+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.7/10EPSS 0.29%

Last modified Jun 17, 2026

CVE-2026-6819 is a high-severity vulnerability rated 8.7/10 on the CVSS scale. 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.. EPSS estimates a 0.29% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

8.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS 4.0

8.7/10

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/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

EPSS Probability

0.29%

20.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-276

Affected Software

Vendor	Product	Versions
Hkuds	Openharness	< 0.1.7

References

https://github.com/HKUDS/OpenHarness/commit/59017e09880fcf9a6f60456a84fb982900b2c0b2Patch
https://github.com/HKUDS/OpenHarness/pull/156Exploit, Issue Tracking, Patch
https://github.com/HKUDS/OpenHarness/releases/tag/v0.1.7Release Notes
https://www.vulncheck.com/advisories/hkuds-openharness-plugin-management-command-exposureThird Party Advisory
https://github.com/HKUDS/OpenHarness/pull/156Exploit, Issue Tracking, Patch

Timeline

Published: Apr 21, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-6819?

How severe is CVE-2026-6819?

CVE-2026-6819 has a CVSS score of 8.7/10 (HIGH severity). The EPSS model estimates a 0.29% probability of exploitation in the next 30 days.

How do I fix CVE-2026-6819?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-6819?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST