CVE-2026-6823

HKUDS OpenHarness prior to PR #147 remediation contains an insecure default configuration vulnerability where remote channels inherit allow_from = ["*"] permitting arbitrary remote senders to pass admission checks. Attackers who can reach the configured channel can bypass access controls and reach host-backed agent runtimes, potentially leading to unauthorized file disclosure and read access through default-enabled read-only tools.

CVSS 4.0

8.3CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N

CVSS 3.1

8.2CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N

EPSS

0.3% chance of exploitation in the next 30 days; higher than 27% of CVEs (scores of 2026-10-26)

CWE

CWE-276

Published

2026-04-21

Modified

2026-10-26

Record from

the NVD, synced 2026-10-26

Affected

• hkuds:openharness

References

• https://github.com/HKUDS/OpenHarness/commit/fab40c6eabfb15f2bdf23cddd3cfe66a64ea203d
• https://github.com/HKUDS/OpenHarness/pull/147
• https://github.com/HKUDS/OpenHarness/releases/tag/v0.1.7
• https://www.vulncheck.com/advisories/hkuds-openharness-insecure-default-remote-channel-allowlist
• https://github.com/HKUDS/OpenHarness/pull/147

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