# CVE-2026-73666 — openchoreo backstage-plugins

> As of 2026-08-14, CVE-2026-73666 is a HIGH-severity vulnerability in openchoreo backstage-plugins, CVSS v3.1 8.2, EPSS 0.4% (39.2th percentile). No Threadlinqs-tracked threat campaign has been attributed to CVE-2026-73666 as of 2026-08-14; the identifier is re-checked against the Threadlinqs threat corpus on every daily ingest.

**Last updated:** 2026-08-14

## What is CVE-2026-73666?

OpenChoreo is a developer platform for Kubernetes. Prior to 1.0.4, 1.1.4, and 1.2.1, the OpenChoreo Backstage backend hardcoded backend.auth.dangerouslyDisableDefaultAuthPolicy and auth.providers.guest.dangerouslyAllowOutsideDevelopment to true, exposing /api/* without authentication and allowing unauthenticated catalog reads, scaffolder log reads, and catalog location creation or deletion. This issue is fixed in versions 1.0.4, 1.1.4, and 1.2.1.

The record classifies CVE-2026-73666 under weakness class [CWE-306](https://intel.threadlinqs.com/cwe/CWE-306). Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs no prior authentication, needs no user interaction, and has high impact on confidentiality. 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 53 days ago.

## Severity and exploitation probability

- **CVSS v3.1 base score:** 8.2 — HIGH (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N`)
- **EPSS (FIRST):** 0.4% probability of exploitation in the next 30 days, higher than 39.2% of all scored CVEs
- **CISA KEV:** Not listed in the CISA Known Exploited Vulnerabilities catalog
- **Threadlinqs priority:** 5.7/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- **Published:** 2026-08-13, last modified 2026-08-14

## Is CVE-2026-73666 being exploited?

It currently carries a trending score of 39 in the Threadlinqs vulnerability feed.

## Affected products and versions

- [openchoreo](https://intel.threadlinqs.com/vendors/openchoreo): backstage-plugins

## How to fix CVE-2026-73666

No vendor patch reference has been recorded for CVE-2026-73666 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.

## Threat activity tracking CVE-2026-73666

No threat campaign in the Threadlinqs corpus currently references CVE-2026-73666, in its CVE list or as an indicator. The linkage is recomputed from the live corpus on every daily ingest, so this section fills in as soon as a tracked campaign cites the identifier.

## Sources

Enriched from CVE.org, NVD, FIRST EPSS. Last verified by Threadlinqs on 2026-08-15. This product uses the NVD API but is not endorsed or certified by the NVD.

**Vendor advisory and patch**

- [github.com](https://github.com/openchoreo/openchoreo/security/advisories/GHSA-v7qx-mqhq-grvh)

**Other references**

- [github.com](https://github.com/openchoreo/backstage-plugins/pull/709)
- [github.com (712)](https://github.com/openchoreo/backstage-plugins/pull/712)
- [github.com (713)](https://github.com/openchoreo/backstage-plugins/pull/713)
- [github.com (716)](https://github.com/openchoreo/backstage-plugins/pull/716)
- [github.com (114a215689924b917da5fd28c56e679aaccaef07)](https://github.com/openchoreo/backstage-plugins/commit/114a215689924b917da5fd28c56e679aaccaef07)

_Showing 6 of 12 recorded references._

Canonical: https://intel.threadlinqs.com/cve/CVE-2026-73666
Full detection coverage and IOCs for threats exploiting CVE-2026-73666 via the Threadlinqs MCP server (Purple tier): https://intel.threadlinqs.com/mcp