CVE-2026-56695: Openharness ai OpenHarness Remote Resume Commands Expose Vulnerability

HIGH

Advisory Identifier: GHSA-399c-3gm2-p29v

CVSS 6.5

Published 2026-06-23

Advisory Summary

CVE-2026-56695 is a HIGH (CVSS 6.5) openharness remote resume commands expose vulnerability (CWE-862: Missing Authorization) affecting Openharness ai libraries in the PyPI ecosystem. The issue involves openharness remote resume commands expose other users' saved session snapshots. Remediation is available in the latest vendor maintenance releases.

CVE-2026-56695 at a Glance

CVE Identifier CVE-2026-56695

GHSA Identifier GHSA-399c-3gm2-p29v

Severity HIGH

CVSS v3.1 Base Score 6.5

CWE Classification CWE-862: Missing Authorization

Affected Product Openharness ai

Package Ecosystem PyPI

Published Date 2026-06-23

Last Updated 2026-09-04

Security Impact

CVSS: 6.5

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N).

Attack Vector Network (AV:N)

Attack Complexity Low (AC:L)

Privileges Required Low (PR:L)

User Interaction None (UI:N)

Scope Unchanged (S:U)

Confidentiality High (C:H)

Integrity None (I:N)

Availability None (A:N)

How to Fix CVE-2026-56695

To remediate this vulnerability, upgrade all affected Openharness ai dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

openharness-ai fixed: Latest secure release

pip install openharness-ai>=Latest secure release

Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release:

pip show openharness-ai

How to Check if You Are Affected

To determine whether your Python environment is affected by CVE-2026-56695, inspect your installed packages using pip:

pip show openharness-ai

Analyze the terminal output to locate any version of Openharness ai in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than the patched release), your application is affected.

Note: The pip show openharness-ai command checks currently installed packages in your active Python environment.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-862: Missing Authorization, where the product does not perform an authorization check when an actor attempts to access a resource or perform an action. In Openharness ai, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

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.

CVE-2026-56695 Affected Openharness ai Versions

1 component(s)

Product / Package	Ecosystem	Affected Versions	Fixed Version
openharness-ai pypi/openharness-ai	PyPI	≤ 0.1.9

References

NVD — CVE-2026-56695 NVD

https://nvd.nist.gov/vuln/detail/CVE-2026-56695

Openharness ai Source Repository REPOSITORY

https://github.com/HKUDS/OpenHarness/pull/276

Security Fix Commit FIX COMMIT

https://github.com/HKUDS/OpenHarness/commit/92e298852c9b9c8c2266236292073623418c640a

Openharness ai Source Repository REPOSITORY

https://github.com/HKUDS/OpenHarness

www.vulncheck.com/advisories/openharn... WEB

https://www.vulncheck.com/advisories/openharness-cross-session-disclosure-via-resume-and-summary-commands

Frequently Asked Questions

What is CVE-2026-56695?

CVE-2026-56695 is a security vulnerability in Openharness ai involving OpenHarness remote resume commands expose other users' saved session snapshots under CWE-862: Missing Authorization.

Which Openharness ai versions are affected?

Affected versions include releases prior to current release patches across affected packages: openharness-ai.

What version fixes CVE-2026-56695?

Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.

Is openharness-ai affected?

Yes, openharness-ai is affected in releases prior to Latest secure release. Upgrade your dependency to Latest secure release or later.

What is the CVSS score of CVE-2026-56695?

CVE-2026-56695 has a CVSS v3.1 base score of 6.5 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

What CWE is associated with CVE-2026-56695?

CVE-2026-56695 is classified under CWE-862: Missing Authorization (The product does not perform an authorization check when an actor attempts to access a resource or perform an action.).

How can I check PyPI dependencies for CVE-2026-56695?

Run the dependency tree command: 'pip show openharness-ai'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.

Machine-readable OSV JSON OSV v1.5 Schema

Normalized schema output

View Raw JSON

{
  "schema_version" : "1.4.0",
  "id" : "GHSA-399c-3gm2-p29v",
  "modified" : "2026-09-04T17:45:36Z",
  "published" : "2026-06-23T18:31:40Z",
  "aliases" : [ "CVE-2026-56695" ],
  "summary" : "OpenHarness remote resume commands expose other users' saved session snapshots",
  "details" : "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.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "openharness-ai"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "0.1.9"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-56695"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/HKUDS/OpenHarness/pull/276"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/HKUDS/OpenHarness/commit/92e298852c9b9c8c2266236292073623418c640a"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/HKUDS/OpenHarness"
  }, {
    "type" : "WEB",
    "url" : "https://www.vulncheck.com/advisories/openharness-cross-session-disclosure-via-resume-and-summary-commands"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-862" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-09-04T17:45:36Z",
    "nvd_published_at" : "2026-06-23T16:17:06Z"
  }
}

CVSS V3

6.5 HIGH