---
title: "CVE-2026-73843: OpenChoreo: Unauthenticated access to data-plane operations via OpenChoreo cluster-gateway management APIs"
url: https://erroneo.us/security/cve/CVE-2026-73843/
description: "CVE-2026-73843 (github.com/openchoreo/openchoreo (Go)): OpenChoreo is a complete, open-source developer platform for Kubernetes. Prior to 1.0.2 and 1.1.2…"
type: vulnerability-record
section: "Security Digest"
date_published: 2026-08-13
date_modified: 2026-09-08
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2026-73843"
kev: false
cvss: 9.6
epss: 0.00482
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2026-73843: OpenChoreo: Unauthenticated access to data-plane operations via OpenChoreo cluster-gateway management APIs

**Signal:** Critical, preconditions apply. Severe if exploited, but exploitation needs conditions that may not apply to you. (Computed from CISA KEV, EPSS and CVSS; not an editorial verdict.)

## Should you act?

- No confirmed exploitation. It is not in CISA’s KEV catalog and CISA’s SSVC assessment records no known exploitation. That can change quickly after a public write-up; re-check if you are affected.
- EPSS 0.5% , percentile 41: FIRST’s model estimates a 0.5% chance of exploitation activity in the next 30 days, higher than 41% of all scored CVEs (low). EPSS is a probability, not a verdict.
- Only applies if your dependency tree includes github.com/openchoreo/openchoreo (Go) < 1.0.2, fixed in 1.0.2 ; github.com/openchoreo/openchoreo (Go) >= 1.1.0, < 1.1.2, fixed in 1.1.2 . Check your lockfile, including transitive dependencies.

## What it is

OpenChoreo is a complete, open-source developer platform for Kubernetes. Prior to 1.0.2 and 1.1.2, internal/cluster-gateway/server.go served caller-facing management APIs on the externally reachable agent listener without authentication, allowing network-reachable attackers to invoke /api/proxy/ and /api/exec/ operations, proxy the data-plane Kubernetes API, and execute commands in workload pods in multi-cluster deployments. This issue is fixed in versions 1.0.2 and 1.1.2.

## Affected packages

- Go `github.com/openchoreo/openchoreo` < 1.0.2 → fixed: 1.0.2
- Go `github.com/openchoreo/openchoreo` >= 1.1.0, < 1.1.2 → fixed: 1.1.2

## Affected products (CVE record)

- openchoreo openchoreo: < 1.0.2, >= 1.1.0, < 1.1.2

## Severity

- GitHub_M CVSS 3.1: 9.6 `CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H`
- GitHub CVSS 3.1: 9.6 `CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H`

## Exploitation

- CISA KEV: not listed (no confirmed in-the-wild exploitation known to CISA).
- CISA SSVC assessment: exploitation none , automatable no , technical impact total .
- FIRST EPSS (model of 2026-10-21): 0.48% probability of exploitation activity in the next 30 days; percentile 41.

## Sources

- [GitHub Advisory GHSA-qh9r-j7rp-4x2m](https://github.com/advisories/GHSA-qh9r-j7rp-4x2m)
- [CVE.org record CVE-2026-73843](https://www.cve.org/CVERecord?id=CVE-2026-73843)
- [NVD entry CVE-2026-73843](https://nvd.nist.gov/vuln/detail/CVE-2026-73843)
- [github.com](https://github.com/openchoreo/openchoreo/security/advisories/GHSA-qh9r-j7rp-4x2m)
- [github.com](https://github.com/openchoreo/openchoreo/pull/4122)
- [github.com](https://github.com/openchoreo/openchoreo/commit/047d80ddc63b4b4b9dd67044d5cffcdbd77685ce)
- [github.com](https://github.com/openchoreo/openchoreo/commit/0aa0ffe1623bd8eb4235cb2a5854336695953c3a)
- [github.com](https://github.com/openchoreo/openchoreo/commit/b42eeb0f5dce95195a9781d7c5a1fe9e38f5da8f)
- [github.com](https://github.com/openchoreo/openchoreo/releases/tag/v1.0.2)
- [github.com](https://github.com/openchoreo/openchoreo/releases/tag/v1.1.2)
- [github.com](https://github.com/openchoreo/openchoreo/releases/tag/v1.2.0)

---
Source page: https://erroneo.us/security/cve/CVE-2026-73843/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt