CVE-2026-125330
HarnessRouter: A workspace's API key could read and change sessions, files and responses of other workspaces in the same organization
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.
Fixes and workarounds
No remediation reported in collected sources.
Missing remediation information is not evidence that no patch exists.
Affected products and versions
| Product | Versions | Authority |
|---|---|---|
| harnessrouter HarnessRouter |
>= 0.4.2, < 0.31.7 (affected) | CNA: GitHub_M |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 3.1 / 7.5 high |
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H | CNA: GitHub_M |
| 3.1 / 7.5 high |
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H | NVD: [email protected] |
Exploit evidence
No exploit evidence in collected sources. This is not proof of no exploitation.
References
- https://github.com/HarnessRouter/harnessrouter/security/advisories/GHSA-9pjr-97x3-c4wvCNA: GitHub_M · x_refsource_CONFIRM
- https://github.com/HarnessRouter/harnessrouter/pull/417CNA: GitHub_M · x_refsource_MISC
- https://github.com/HarnessRouter/harnessrouter/commit/249c6cc9ab51a24a78f4e9809d356718f2ef74b1CNA: GitHub_M · x_refsource_MISC
- https://github.com/HarnessRouter/harnessrouter/releases/tag/v0.31.7CNA: GitHub_M · x_refsource_MISC
- https://github.com/HarnessRouter/harnessrouter/commit/249c6cc9ab51a24a78f4e9809d356718f2ef74b1[email protected]
- https://github.com/HarnessRouter/harnessrouter/pull/417[email protected]
- https://github.com/HarnessRouter/harnessrouter/releases/tag/v0.31.7[email protected]
- https://github.com/HarnessRouter/harnessrouter/security/advisories/GHSA-9pjr-97x3-c4wv[email protected]
For agents and automation
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Endpoints and access details
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