HarnessRouter is a self-hosted unified API for agent harnesses. From version 0.4.2 until 0.31.7, routes that accept a session ID or response ID validate only the caller's organization and do not enforce the workspace scope of a non-default workspace API key. A key holder who learns a non-guessable identifier from another workspace in the same organization can read sessions, conversation turns, files, traces, and responses, overwrite files, cancel or delete sessions, and publish share links. The issue does not cross organization boundaries, and console users, organization keys, and Default Workspace keys intentionally retain organization-wide access. This issue is fixed in version 0.31.7.
History

Thu, 12 Nov 2026 22:15:00 +0000

Type Values Removed Values Added
First Time appeared Harnessrouter
Harnessrouter harnessrouter
Vendors & Products Harnessrouter
Harnessrouter harnessrouter

Tue, 10 Nov 2026 18:45:00 +0000

Type Values Removed Values Added
Description HarnessRouter is a self-hosted unified API for agent harnesses. From version 0.4.2 until 0.31.7, routes that accept a session ID or response ID validate only the caller's organization and do not enforce the workspace scope of a non-default workspace API key. A key holder who learns a non-guessable identifier from another workspace in the same organization can read sessions, conversation turns, files, traces, and responses, overwrite files, cancel or delete sessions, and publish share links. The issue does not cross organization boundaries, and console users, organization keys, and Default Workspace keys intentionally retain organization-wide access. This issue is fixed in version 0.31.7.
Title HarnessRouter: A workspace's API key could read and change sessions, files and responses of other workspaces in the same organization
Weaknesses CWE-639
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2026-11-10T18:36:53.148Z

Updated: 2026-11-10T18:36:53.148Z

Reserved: 2026-11-09T21:22:55.598Z

Link: CVE-2026-125330

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Deferred

Published: 2026-11-10T19:21:10.463

Modified: 2026-11-12T22:18:51.470

Link: CVE-2026-125330

cve-icon Redhat

No data.