# CVE-2026-6729: HKUDS OpenHarness prior to PR #159 remediation contains a session key derivation vulnerability that allows…

Source: https://junglewise.ai/threats/cve-2026-6729-hkuds-openharness-prior-to-pr-159-remediation-contains-a-session  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-04-20  
License: CC BY 4.0 with a link back

CVE-2026-6729 · Severity: medium · CVSS 6.3 · Published 2026-04-20

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.

Technologies: [HKUDS OpenHarness](https://junglewise.ai/threats/technologies/openharness). Vendors: [HKUDS](https://junglewise.ai/threats/vendors/hkuds).

## Quick answers

**Is CVE-2026-6729 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-6729 being exploited in the wild.

**How severe is CVE-2026-6729?** Medium severity, with a CVSS score of 6.3, published 20 April 2026.

**Which products and versions are affected?** HKUDS OpenHarness. The advisory does not name versions.

**Is there a fix for CVE-2026-6729?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**Am I affected by CVE-2026-6729?** Check whether you run HKUDS OpenHarness. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Affected products

- HKUDS OpenHarness

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