CVE-2026-6819Public exploitNetwork attack vector

Authenticated plugin control via ungated lifecycle commands

Published Apr 21, 2026 · Updated Apr 21, 2026

Improper authorization in OpenHarness before 0.1.7 allows remote authenticated users to control plugins through channel commands. The ohmo gateway forwards allowed senders' slash commands to plugin lifecycle handlers because /plugin and /reload-plugins lack local-only or remote-admin gates. Remote authenticated users must first pass channel admission; they can then install, enable, disable, or reload plugins and alter the host's trust state.

CVSS severity6.5
Medium
EPSS probability0.29%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Improper authorization in OpenHarness before 0.1.7 allows remote authenticated users to control plugins through channel commands. The ohmo gateway forwards allowed senders' slash commands to plugin lifecycle handlers because /plugin and /reload-plugins lack local-only or remote-admin gates. Remote authenticated users must first pass channel admission; they can then install, enable, disable, or reload plugins and alter the host's trust state.

The record

CVE
CVE-2026-6819
Published
Apr 21, 2026
Updated
Apr 21, 2026
Vendor
Data Intelligence Lab @ HKU
Product
OpenHarness
Classifications
Unavailable
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 21, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 21, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <PR #156

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Data Intelligence Lab @ HKU · OpenHarnessversion=0 <PR #156

Published CVSS scores

6.5HKUDS/OpenHarnessCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

No sourced classifications are available.

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo