CVE•Published 2026-04-21•Modified 2026-05-07•1 article on news•6 live references•NVD data

CVE-2026-6819Hkuds · Openharness

Vulnerability data via NVD (ingested)

CVSS v3.1

8.8

HIGH

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

EPSS percentile

Exploit Prediction Scoring System · top 88% of all CVEs

Weaknesses (CWE)

CWE-276Incorrect Default Permissions

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.

Timeline

Published 2026-04-21

Modified 2026-05-07

External references

NVD MITRE Exploit-DB GitHub PoC Sploitus VulnCheck

Search for exposed instances

Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).

Shodan · vuln tag0 hosts

vuln:CVE-2026-6819

Hosts Shodan has explicitly fingerprinted as vulnerable.

Shodan · product

product:"Hkuds Openharness"

All exposed Hkuds Openharness instances — cross-reference with the CVE's affected-version range.

Shodan · banner/body mention

http.html:"Openharness"

HTTP body or banner mentions "Openharness" — catches deploys Shodan didn't identify as a product.

More intel sources (5)

Shodan report

vuln:CVE-2026-6819