CVE-2026-6729

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.

References

https://www.vulncheck.com/advisories/hkuds-openharness-session-key-collision-privilege-escalation

https://github.com/HKUDS/OpenHarness/pull/159

https://github.com/HKUDS/OpenHarness/commit/3186851c479ee714a9bb9aa6cd77017db7e589e2

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3

CVSS v4