VULNERABILITY INTELLIGENCE

CVE-2026-6729

CVSS score6.3 MEDIUM
EPSS probability0.20%
CISA KEVNot currently listed
Published2026-04-20
Last modified2026-10-25
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

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.

Weakness classification

  • disclosure@vulncheck.com: CWE-287

Primary references