CVE-2026-6823
HighCVSS 8.2Exploitation Probability (EPSS)
Low risk27th percentile - higher than 27% of all known CVEs
Summary
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.
Risk Assessment
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.
Recommendation
It is recommended to update the configuration to restrict access to remote channels and apply the fixes included in PR #147.
Other vulnerabilities in HKUDS OpenHarness
See all- CVE-2026-7551High
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, leading to execution through the bridge session manager.
- CVE-2026-6819High
HKUDS OpenHarness prior to PR #156 remediation exposes plugin lifecycle commands including /plugin install, /plugin enable, /plugin disable, and /reload-plugins to remote senders by default. Attackers who gain access through the channel layer can remotely manage plugin trust and activation state, enabling unauthorized plugin installation and activation on the system.
- CVE-2026-6729Medium
HKUDS OpenHarness prior to PR #159 remediation contains a session key derivation vulnerability that allows authenticated participants in shared chats or threads to hijack other users' sessions. This stems from a shared ohmo session key lacking sender identity verification, enabling reuse of another user's conversation state and interruption of their active tasks.
Original NVD description (English source)
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.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS