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CVE-2026-6729
MEDIUM6.3
Description
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.
CVE Details
CVSS v3.1 Score6.3
SeverityMEDIUM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Attack VectorNETWORK
ComplexityLOW
Privileges RequiredLOW
User InteractionNONE
Published4/20/2026
Last Modified4/24/2026
Sourcenvd
Honeypot Sightings0
Affected Products
hkuds:openharness
Weaknesses (CWE)
CWE-287
References
https://github.com/HKUDS/OpenHarness/commit/3186851c479ee714a9bb9aa6cd77017db7e589e2(disclosure@vulncheck.com)
https://github.com/HKUDS/OpenHarness/pull/159(disclosure@vulncheck.com)
https://www.vulncheck.com/advisories/hkuds-openharness-session-key-collision-privilege-escalation(disclosure@vulncheck.com)
https://github.com/HKUDS/OpenHarness/pull/159(134c704f-9b21-4f2e-91b3-4a467353bcc0)
IOC Correlations
No correlations recorded
This product uses data from the NVD API but is not endorsed or certified by the NVD.