CVE-2026-6819

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.

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CVSS v3.1 Score

8.8

HIGH

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

EPSS — Exploit Prediction

0.0004

Probability of exploitation

0.10%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-276 Incorrect Default Permissions

Affected Products

Vendor	Product	Versions
hkuds	openharness	< 0.1.7

References

Advisories & Patches

https://github.com/HKUDS/OpenHarness/commit/59017e09880fcf9a6f60456a84fb982900b2c0b2 https://github.com/HKUDS/OpenHarness/pull/156 https://github.com/HKUDS/OpenHarness/pull/156

Exploits

https://github.com/HKUDS/OpenHarness/pull/156 https://github.com/HKUDS/OpenHarness/pull/156

Other References

https://github.com/HKUDS/OpenHarness/releases/tag/v0.1.7 https://www.vulncheck.com/advisories/hkuds-openharness-plugin-management-command-exposure

Frequently Asked Questions

What is CVE-2026-6819? +

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. It has a CVSS v3.1 base score of 8.8 (HIGH).

How severe is CVE-2026-6819? +

CVE-2026-6819 has a CVSS v3.1 score of 8.8 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 0.0004, placing it in the 0th percentile for exploitation probability.

What products are affected by CVE-2026-6819? +

CVE-2026-6819 affects products from hkuds, specifically: openharness. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2026-6819? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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