CVE-2026-6729: medium-severity vulnerability in HKUDS OpenHarness
HKUDS OpenHarness Session Key Collision Privilege Escalation
Published · Updated
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13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 5.3epss 0.2%
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 by exploiting a shared ohmo session key that lacks sender identity verification. Attackers can reuse another user's conversation state and replace or interrupt their active tasks by colliding into the same session boundary through the shared chat or thread scope.
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
Affected products
HKUDS · OpenHarnessRelated CVEs — HKUDS OpenHarness
In the same product, most dangerous first.
CVE-2026-40502HIGHOpenHarness Remote Administrative Command Injection via Gateway HandlerEPSS 1.7%CVE-2026-7551HIGHHKUDS OpenHarness Remote Command Execution via /bridge Slash CommandEPSS 0.6%CVE-2026-40503HIGHOpenHarness Path Traversal Information Disclosure via /memory showEPSS 0.4%CVE-2026-56695HIGHOpenHarness - Cross-Session Disclosure via /resume and /summary CommandsEPSS 0.4%CVE-2026-56696MEDIUMOpenHarness - Prompt Injection via /issue and /pr_comments Slash CommandsEPSS 0.4%CVE-2026-6823HIGHHKUDS OpenHarness Insecure Default Remote Channel AllowlistEPSS 0.3%