How severe is CVE-2026-6819?

CVE-2026-6819 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-6819 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-6819?

CVE-2026-6819 affects Hkuds Openharness. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-6819?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-6819 have an EU (EUVD) identifier?

Yes. CVE-2026-6819 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-24292.

When was CVE-2026-6819 published?

CVE-2026-6819 was published on 2026-04-21 and last updated on 2026-06-17.

CVE-2026-6819

CVE-2026-6819 is a high-severity vulnerability in Hkuds Openharness with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-276.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v4: 8.7
EPSS exploit prediction: 0% (21st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-24292
Weakness: CWE-276
Affected product: Hkuds Openharness
Published: 2026-04-21
Last modified: 2026-06-17

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.

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.
How severe is CVE-2026-6819?: CVE-2026-6819 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-6819 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-6819?: CVE-2026-6819 affects Hkuds Openharness. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-6819?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-6819 have an EU (EUVD) identifier?: Yes. CVE-2026-6819 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-24292.
When was CVE-2026-6819 published?: CVE-2026-6819 was published on 2026-04-21 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:hkuds:openharness:*:*:*:*:*:*:*:*

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