HarnessRouter: A workspace's API key could read and change sessions, files and responses of other workspaces in the same organization

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-125330
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-11-10 19:21:10 UTC
Updated2026-11-10 19:21:10 UTC
DescriptionHarnessRouter 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.

Risk And Classification

Primary CVSS: v3.1 7.5 HIGH from [email protected]

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Problem Types: CWE-639 | CWE-639 CWE-639: Authorization Bypass Through User-Controlled Key

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary7.5HIGHCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
3.1CNADECLARED7.5HIGHCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA HarnessRouter Harnessrouter affected >= 0.4.2, < 0.31.7 Not specified

References

ReferenceSourceLinkTags
github.com/HarnessRouter/harnessrouter/releases/tag/v0.31.7 [email protected] github.com
github.com/HarnessRouter/harnessrouter/security/advisories/GHSA-9pjr-97x... [email protected] github.com
github.com/HarnessRouter/harnessrouter/commit/249c6cc9ab51a24a78f4e9809d... [email protected] github.com
github.com/HarnessRouter/harnessrouter/pull/417 [email protected] github.com
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