CVE-2026-6823

Name: CVE-2026-6823
Creator: NVD / NIST
Published: 2026-04-21T21:16:48.827+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.3/10EPSS 0.34%

Last modified Jun 17, 2026

CVE-2026-6823 is a high-severity vulnerability rated 8.3/10 on the CVSS scale. 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.. EPSS estimates a 0.34% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

8.2/10

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

CVSS 4.0

8.3/10

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Probability

0.34%

25.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-276

Affected Software

Vendor	Product	Versions
Hkuds	Openharness	< 0.1.7

References

https://github.com/HKUDS/OpenHarness/commit/fab40c6eabfb15f2bdf23cddd3cfe66a64ea203dPatch
https://github.com/HKUDS/OpenHarness/pull/147Exploit, Issue Tracking, Patch
https://github.com/HKUDS/OpenHarness/releases/tag/v0.1.7Release Notes
https://www.vulncheck.com/advisories/hkuds-openharness-insecure-default-remote-channel-allowlistThird Party Advisory
https://github.com/HKUDS/OpenHarness/pull/147Exploit, Issue Tracking, Patch

Timeline

Published: Apr 21, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-6823?

How severe is CVE-2026-6823?

CVE-2026-6823 has a CVSS score of 8.3/10 (HIGH severity). The EPSS model estimates a 0.34% probability of exploitation in the next 30 days.

How do I fix CVE-2026-6823?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-6823?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST