CVE-2026-6729
HKUDS OpenHarness Session Key Collision Privilege Escalation
- State
- Published
- Severity
- 5.3 Medium
- Published
- Apr 20, 2026
- Updated
- Jul 14, 2026
- Reserved
- Apr 20, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 5.3 Medium | 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 | VulnCheck |
| 3.1 | 6.3 Medium | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L | VulnCheck |
Weaknesses
- CWE-287 Improper Authentication (CWE-287)
Affected Products
| Product | Versions |
|---|---|
OpenHarnessHKUDS |
|
References
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