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Description

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.

PUBLISHED Reserved 2026-04-21 | Published 2026-04-21 | Updated 2026-04-22 | Assigner VulnCheck




HIGH: 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

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

Problem types

CWE-276 Incorrect Default Permissions

Product status

Default status
unaffected

Any version before PR #147
affected

Credits

Chia Min Jun Lennon finder

References

github.com/HKUDS/OpenHarness/pull/147 exploit

github.com/HKUDS/OpenHarness/pull/147 (Pull Request) patch

github.com/...ommit/fab40c6eabfb15f2bdf23cddd3cfe66a64ea203d (Patch Commit) patch

github.com/HKUDS/OpenHarness/releases/tag/v0.1.7 (Release Notes) third-party-advisory

www.vulncheck.com/...secure-default-remote-channel-allowlist third-party-advisory

cve.org (CVE-2026-6823)

nvd.nist.gov (CVE-2026-6823)

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