Insecure Default Configuration Vulnerability in HKUDS OpenHarness
CVE-2026-6823

8.3HIGH

Key Information:

Vendor

Hkuds

Status
Openharness
Vendor
CVE Published:
21 April 2026

What is CVE-2026-6823?

The OpenHarness platform developed by HKUDS is affected by an insecure default configuration that can expose sensitive information. Prior to the application of remediation in PR #147, the system allows remote channels to inherit an overly permissive allowlist ('allow_from = ["*"]'), which can potentially allow unauthorized users to bypass access checks. If an attacker gains access to the configured channel, they may exploit this vulnerability to reach host-backed agent runtimes, enabling unauthorized file disclosures and unauthorized read access through default-enabled read-only tools.

Affected Version(s)

OpenHarness 0

References

https://github.com/HKUDS/OpenHarness/pull/147
patch
https://github.com/HKUDS/OpenHarness/commit/fab40c6eabfb1...
patch
https://github.com/HKUDS/OpenHarness/releases/tag/v0.1.7
third-party-advisory

CVSS V4

Score:
8.3
Severity:
HIGH
Confidentiality:
High
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
Physical
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Chia Min Jun Lennon
.