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

Q: How do I fix CVE-2026-6729?

openharness: upgrade to 0.1.7. Exact commands for each OS are on this page.

Q: Is CVE-2026-6729 being exploited?

CVE-2026-6729 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-6729 affect?

CVE-2026-6729 affects openharness. Severity is medium (CVSS 6.3). 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 la

Q: How urgent is CVE-2026-6729?

Priority 29/100. Public exploit reference

Routine

MEDIUM 6.3UPGRADE

CVE-2026-6729 is a medium-severity flaw (CVSS 6.3) affecting openharness. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	6.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.2% (top 91%)
CISA exploited list	No
Weakness	CWE-287
Published	2026-04-20
Last modified	2026-10-25

Publisher (CNA): VulnCheck · Vendor: hkuds

Last updated 2026-10-25 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-04-20 22:16 UTCPublished CVE record published
2026-10-25 23:10 UTCUpdated Record last modified

hkuds openharness UPGRADE

Affected: < 0.1.7

Fixed in: 0.1.7

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy openharness || rpm -q openharness || openharness --version

2. UPGRADE to 0.1.7 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade openharness

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade openharness

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-6729?

openharness: upgrade to 0.1.7. Exact commands for each OS are on this page.

Is CVE-2026-6729 being exploited?

CVE-2026-6729 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-6729 affect?

CVE-2026-6729 affects openharness. Severity is medium (CVSS 6.3). 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 la

How urgent is CVE-2026-6729?

Priority 29/100. Public exploit reference

References

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