CVE-2026-6823

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.

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CVSS v3.1 Score

8.2

HIGH

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

EPSS — Exploit Prediction

0.0016

Probability of exploitation

0.36%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-276 Incorrect Default Permissions

Affected Products

Vendor	Product	Versions
hkuds	openharness	< 0.1.7

References

Advisories & Patches

https://github.com/HKUDS/OpenHarness/commit/fab40c6eabfb15f2bdf23cddd3cfe66a64ea203d https://github.com/HKUDS/OpenHarness/pull/147 https://github.com/HKUDS/OpenHarness/pull/147

Exploits

https://github.com/HKUDS/OpenHarness/pull/147 https://github.com/HKUDS/OpenHarness/pull/147

Other References

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

Frequently Asked Questions

What is 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. It has a CVSS v3.1 base score of 8.2 (HIGH).

How severe is CVE-2026-6823? +

CVE-2026-6823 has a CVSS v3.1 score of 8.2 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 0.0016, placing it in the 0th percentile for exploitation probability.

What products are affected by CVE-2026-6823? +

CVE-2026-6823 affects products from hkuds, specifically: openharness. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2026-6823? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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