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GHSA-qh9r-j7rp-4x2m — openchoreo

CRITICALFix: openchoreo/openchoreo#4122

GHSA-qh9r-j7rp-4x2m is a critical-severity (CVSS 9.6) Missing Authentication vulnerability in github.com/openchoreo/openchoreo. A fix is available for github.com/openchoreo/openchoreo — see the affected versions and patch details below.

OpenChoreo: Unauthenticated access to data-plane operations via OpenChoreo cluster-gateway management APIs

Also known asCVE-2026-73843GO-2026-6362
Published
Sep 2, 2026
Updated
Sep 10, 2026
Affected
2 pkgs
Patched
2 / 2
Exploits
None indexed
Exploitation data as of Sep 28, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

No confirmed exploitation observed yet

  • A successful exploit gives an attacker total control of the affected component, not partial access.
  • CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.

Exploitation and automatability from CISA’s SSVC triage for GHSA-qh9r-j7rp-4x2m.

EPSS Exploitation Probability

via FIRST.org ↗
0.5%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs39th percentile — riskier than 39% of all scored CVEsHighest risk

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

GHSA-qh9r-j7rp-4x2m by exploitation likelihood (EPSS) against impact (CVSS). Outside the shaded patch-first corner.

Where this sits among everything scored

Of 380,526 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Counts from FIRST.org, log-scaled.

Real-World Exposure

2 pkgs affected
🐹github.com/openchoreo/openchoreo🐹github.com/openchoreo/openchoreo

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Go packages — download data is not available via public APIs for these ecosystems.

Description

Summary

The OpenChoreo control-plane cluster-gateway served its caller-facing management APIs on the same network listener that accepts data-plane agent connections. In the multi-cluster topology that listener is published outside the cluster, and the management APIs did not authenticate the calling client. A party able to reach the listener could therefore invoke privileged data-plane operations without authenticating and without passing through the OpenChoreo API server's authorization.

Impact

An attacker who can reach the externally published cluster-gateway endpoint can perform data-plane operations normally restricted to the OpenChoreo API server and gated by its authorization — including proxying the data plane's Kubernetes API and executing commands inside workload pods. This can result in full compromise of workloads on the affected data plane (disclosure, tampering, and denial of service).

The exposure applies to the multi-cluster / remote data-plane topology, where the cluster-gateway is published outside the cluster so remote data-plane agents can connect. That same externally reachable listener also served the caller-facing management APIs, which did not authenticate the caller. Deployments that do not publish the cluster-gateway outside the cluster are not affected.

Patches

Fixed in 1.0.2, 1.1.2, and 1.2.0. The fix moves the caller-facing management APIs onto a separate internal listener that is not published outside the cluster, leaving only the agent-connection endpoint on the externally reachable listener. Upgrading is non-disruptive — no data-plane agent or configuration changes are required beyond the standard chart upgrade. Upgrade path: 1.1.x → 1.1.2, 1.0.x and earlier → 1.0.2, 1.2 line → 1.2.0.

Workarounds

If you cannot upgrade immediately:

  • If you do run remote data planes, restrict reachability of the external gateway endpoint to known data-plane source addresses only (firewall / gateway-level allowlisting).

Affected Packages

2 total 2 fixed
EcosystemPackageVulnerable rangeFix
🐹Gogithub.com/openchoreo/openchoreoall versions1.0.2go get github.com/openchoreo/openchoreo@v1.0.2
🐹Gogithub.com/openchoreo/openchoreo≥ 1.1.0&&< 1.1.21.1.2go get github.com/openchoreo/openchoreo@v1.1.2

Detection & mitigation playbook

Open-source dependency
  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for github.com/openchoreo/openchoreo, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update github.com/openchoreo/openchoreo to 1.0.2 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-qh9r-j7rp-4x2m is resolved across your whole dependency graph.

  3. Workarounds

    Put an independent control in front of the weakness: restrict the affected endpoint or interface to trusted networks, require an additional authentication factor or proxy-level check, and invalidate existing sessions and credentials in case the flaw has already been used.

Frequently Asked Questions

### Summary The OpenChoreo control-plane **cluster-gateway** served its caller-facing management APIs on the same network listener that accepts data-plane agent connections. In the multi-cluster topology that listener is published outside the cluster, and the management APIs did not authenticate the calling client. A party able to reach the listener could therefore invoke privileged data-plane operations without authenticating and without passing through the OpenChoreo API server's authorization. ### Impact An attacker who can reach the externally published cluster-gateway endpoint can perfor
O3 Security · Impact-Aware SCA

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GHSA-qh9r-j7rp-4x2m: DoS (Critical 9.6) | O3 Security