How severe is CVE-2026-40502?

CVE-2026-40502 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-40502 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-40502?

CVE-2026-40502 affects Hkuds Openharness. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-40502?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-40502 have an EU (EUVD) identifier?

Yes. CVE-2026-40502 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-23141.

When was CVE-2026-40502 published?

CVE-2026-40502 was published on 2026-04-16 and last updated on 2026-06-17.

CVE-2026-40502

CVE-2026-40502 is a high-severity vulnerability in Hkuds Openharness with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-862.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v4: 8.7
EPSS exploit prediction: 2% (74th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-23141
Weakness: CWE-862
Affected product: Hkuds Openharness
Published: 2026-04-16
Last modified: 2026-06-17

Description

OpenHarness prior to commit dd1d235 contains a command injection vulnerability that allows remote gateway users with chat access to invoke sensitive administrative commands by exploiting insufficient distinction between local-only and remote-safe commands in the gateway handler. Attackers can execute administrative commands such as /permissions full_auto through remote chat sessions to change permission modes of a running OpenHarness instance without operator authorization.

Frequently asked questions

What is CVE-2026-40502?: OpenHarness prior to commit dd1d235 contains a command injection vulnerability that allows remote gateway users with chat access to invoke sensitive administrative commands by exploiting insufficient distinction between local-only and remote-safe commands in the gateway handler. Attackers can execute administrative commands such as /permissions full_auto through remote chat sessions to change permission modes of a running OpenHarness instance without operator authorization.
How severe is CVE-2026-40502?: CVE-2026-40502 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-40502 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-40502?: CVE-2026-40502 affects Hkuds Openharness. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-40502?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-40502 have an EU (EUVD) identifier?: Yes. CVE-2026-40502 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-23141.
When was CVE-2026-40502 published?: CVE-2026-40502 was published on 2026-04-16 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:hkuds:openharness:*:*:*:*:*:*:*:*

More vulnerabilities in Hkuds Openharness

CVE-2026-7551 — High (CVSS 8.8): HKUDS OpenHarness contains a remote code execution vulnerability in the /bridge slash command that allows remote…
CVE-2026-6819 — High (CVSS 8.8): HKUDS OpenHarness prior to PR #156 remediation exposes plugin lifecycle commands including /plugin install, /plugin…
CVE-2026-40516 — High (CVSS 8.3): OpenHarness before commit bd4df81 contains a server-side request forgery vulnerability in the web_fetch and web_search…
CVE-2026-6823 — High (CVSS 8.2): HKUDS OpenHarness prior to PR #147 remediation contains an insecure default configuration vulnerability where remote…
CVE-2026-40515 — High (CVSS 7.5): OpenHarness before commit bd4df81 contains a permission bypass vulnerability that allows attackers to read sensitive…
CVE-2026-40503 — Medium (CVSS 6.5): OpenHarness prior to commit dd1d235 contains a path traversal vulnerability that allows remote gateway users with chat…

All CVEs affecting Hkuds Openharness →

Other CWE-862 (Missing Authorization) vulnerabilities

CVE-2026-0092 — Critical (CVSS 10.0): In Package Manager, there is a possible device lock controller bypass due to a missing permission check. This could…
CVE-2026-33712 — Critical (CVSS 10.0): Typebot is a chatbot builder tool. In versions 3.15.2 and prior, the preview chat endpoint (POST…
CVE-2026-2031 — Critical (CVSS 10.0): An Improper Access Control vulnerability in several internal API endpoints for Google Cloud Application Integration…
CVE-2026-34976 — Critical (CVSS 10.0): Dgraph is an open source distributed GraphQL database. Prior to 25.3.1, the restoreTenant admin mutation is missing…
CVE-2025-30416 — Critical (CVSS 10.0): Sensitive data disclosure and manipulation due to missing authorization. The following products are affected: Acronis…
CVE-2025-45854 — Critical (CVSS 10.0): /server/executeExec of JEHC-BPM 2.0.1 allows attackers to execute arbitrary code via execParams.

Browse all CWE-862 (Missing Authorization) vulnerabilities →