OpenHarness remote resume commands expose other users' saved session snapshots
OpenHarness ohmo gateway /resume and /summary slash commands default remote_invocable to True, allowing admitted remote senders to enumerate and load arbitrary session snapshots by ID. Attackers can exploit this to access victim snapshots containing private prompts, credentials, tool output, and file paths via shared gateway channels.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Python (PyPI) | openharness-ai | <= 0.1.9 | no fix |
References
- https://nvd.nist.gov/vuln/detail/CVE-2026-56695
- https://github.com/HKUDS/OpenHarness/pull/276
- https://github.com/HKUDS/OpenHarness/commit/92e298852c9b9c8c2266236292073623418c640a
- https://github.com/HKUDS/OpenHarness
- https://www.vulncheck.com/advisories/openharness-cross-session-disclosure-via-resume-and-summary-commands
- https://pypi.org/project/openharness-ai
- https://github.com/advisories/GHSA-399c-3gm2-p29v
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N- Weakness (CWE)
CWE-862- Platform
- Python (PyPI)
- Package
openharness-ai- Disclosed
- 23.06.2026
- Updated
- 11.10.2026 15:18
Sources and licenses
OSV / GitHub Advisory Database - PYSEC-2026-3881 - PyPA Advisory Database; CC BY 4.0
OSV / GitHub Advisory Database - GHSA-399c-3gm2-p29v - CC BY 4.0
Vulnerability history: openharness-ai
All published vulnerabilities of this package (Python (PyPI)), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 2
- First → latest
- 06.2026 06.2026
- Without a fix
- 2
- Exploited in attacks
- 0
Severity breakdown
- High 1
- Medium 1
Disclosures per year
- 2026: 2
-
OpenHarness remote resume commands expose other users' saved session snapshots this entry
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