CVE-2026-6729

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 v3 6.3 MEDIUM

6.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://github.com/HKUDS/OpenHarness/commit/3186851c479ee714a9bb9aa6cd77017db7e589e2	Patch
https://github.com/HKUDS/OpenHarness/pull/159	Exploit Issue Tracking
https://www.vulncheck.com/advisories/hkuds-openharness-session-key-collision-privilege-escalation	Third Party Advisory
https://github.com/HKUDS/OpenHarness/pull/159	Exploit Issue Tracking

Configurations

Configuration 1 (hide)

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

History

No history.

Information

Published : 2026-04-20 22:16

Updated : 2026-06-17 11:01

NVD link : CVE-2026-6729

Mitre link : CVE-2026-6729

CVE.ORG link : CVE-2026-6729

JSON object : View

Products Affected

hkuds

openharness

CWE

CWE-287

Improper Authentication

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