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Vulnerability record · CVE-2026-7551 · published 30 April 2026

CVE-2026-7551: Hkuds openharness os command injection vulnerability

Hkuds · Openharness

HKUDS OpenHarness contains a remote code execution vulnerability in the /bridge slash command that allows remote senders accepted by configuration to execute arbitrary operating system commands. Attackers can invoke the /bridge spawn command with attacker-controlled command text that is forwarded to the bridge session manager and executed through the shared shell subprocess helper, allowing them to spawn shell sessions as the OpenHarness process user and access local files, credentials, workspace state, and repository contents.

8.7 CVSS 4.0 High EPSS 1.0% · top 38.0% CWE-78 · OS command injection
8.7CVSS 4.0 base score
1.0%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
3References, 1 tagged exploit
17 Jun 2026Last modified by NVD

Description

HKUDS OpenHarness contains a remote code execution vulnerability in the /bridge slash command that allows remote senders accepted by configuration to execute arbitrary operating system commands. Attackers can invoke the /bridge spawn command with attacker-controlled command text that is forwarded to the bridge session manager and executed through the shared shell subprocess helper, allowing them to spawn shell sessions as the OpenHarness process user and access local files, credentials, workspace state, and repository contents.

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/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:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/HKUDS/OpenHarness/commit/438e37309778e19060dfe7b172eb142e543c4cd6 Patch
https://github.com/HKUDS/OpenHarness/pull/208 ExploitIssue TrackingPatchThird Party Advisory
https://www.vulncheck.com/advisories/hkuds-openharness-remote-command-execution-via-bridge-slash-command Third Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

8.7CVE-2026-6819Hkuds openharness incorrect default permissions vulnerabilityHKUDS OpenHarness prior to PR #156 remediation exposes plugin lifecycle commands including /plugin install, /plugin enable, /plugin disable, and /rel…EPSS 0.52%8.7CVE-2026-40515Hkuds openharness incorrect authorization vulnerabilityOpenHarness before commit bd4df81 contains a permission bypass vulnerability that allows attackers to read sensitive files by exploiting incomplete p…EPSS 0.36%8.7CVE-2026-40502Hkuds openharness missing authorization vulnerabilityOpenHarness prior to commit dd1d235 contains a command injection vulnerability that allows remote gateway users with chat access to invoke sensitive …EPSS 2.1%8.3CVE-2026-6823Hkuds openharness incorrect default permissions vulnerabilityHKUDS OpenHarness prior to PR #147 remediation contains an insecure default configuration vulnerability where remote channels inherit allow_from = ["…EPSS 0.58%7.8CVE-2026-40516Hkuds openharness server-side request forgery (ssrf) vulnerabilityOpenHarness before commit bd4df81 contains a server-side request forgery vulnerability in the web_fetch and web_search tools that allows attackers to…EPSS 0.29%7.1CVE-2026-40503Hkuds openharness path traversal vulnerabilityOpenHarness prior to commit dd1d235 contains a path traversal vulnerability that allows remote gateway users with chat access to read arbitrary files…EPSS 0.46%5.3CVE-2026-6729Hkuds openharness improper authentication vulnerabilityHKUDS OpenHarness prior to PR #159 remediation contains a session key derivation vulnerability that allows authenticated participants in shared chats…EPSS 0.35%8.8CVE-2026-86950Apple ipados out-of-bounds write vulnerabilityAn out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 26.7.1 and iPadOS 26.7.1, macOS Sequoia 15.8.1, …KEV

Source: NIST National Vulnerability Database (record CVE-2026-7551), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.