CVE-2026-73666 json
OpenChoreo: Unauthenticated Backstage developer-portal API exposes OpenChoreo catalog data, scaffolder logs, and allows unauthenticated catalog write/delete
published 3mo ago modified 2mo ago also EUVD-2026-58543 , GHSA-v7qx-mqhq-grvh
Unreviewed: the maintainers' own advisory
Published by the maintainers on their GitHub repository openchoreo/openchoreo. GitHub has not reviewed it into the GitHub Advisory Database, so the affected packages and versions are the maintainers' word. Read the full advisory on GitHub.
- cvss
- 8.2
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.7%
- EPSS 0.7% chance of exploitation in 30 days, percentile 52%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- github.com/openchoreo/backstage-plugins@114a215 commit
- github.com/openchoreo/backstage-plugins@dfa3fc8 commit
- github.com/openchoreo/backstage-plugins@f6df89c commit
- github.com/openchoreo/backstage-plugins@fdaceeb commit
- github.com/openchoreo/backstage-plugins#709 pull request
- github.com/openchoreo/backstage-plugins#712 pull request
- github.com/openchoreo/backstage-plugins#713 pull request
- github.com/openchoreo/backstage-plugins#716 pull request
- github.com/openchoreo/backstage-plugins/releases/tag/v1.0.4 release
- github.com/openchoreo/backstage-plugins/releases/tag/v1.1.4 release
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Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 2mo ago
Exploit prediction
0.68% chance of exploitation in the next 30 days, higher than 52% of all scored CVEs (FIRST EPSS, 2026-11-11).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 8.2 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N |
Affected products
- openchoreo backstage-plugins
Classification
- Weakness
-
- CWE-306 Missing Authentication for Critical Functionality
References
- github.com /openchoreo/backstage-plugins/pull/709
- github.com /openchoreo/backstage-plugins/pull/712
- github.com /openchoreo/backstage-plugins/pull/713
- github.com /openchoreo/backstage-plugins/pull/716
- github.com /openchoreo/backstage-plugins/commit/114a215689924b917da5fd28c56e679aaccaef07
- github.com /openchoreo/backstage-plugins/commit/dfa3fc8bd1ffef1346442c891e3e3dd54bc26501
- github.com /openchoreo/backstage-plugins/commit/f6df89c15834506902b2f706a9e8fbe1f6ef1474
- github.com /openchoreo/backstage-plugins/commit/fdaceeb737938e830c48a150d5bec24f5f487e52
-
github.com
/openchoreo/openchoreo/security/advisories/GHSA-v7qx-mqhq-grvh
advisory
- github.com /openchoreo/backstage-plugins/releases/tag/v1.0.4
- github.com /openchoreo/backstage-plugins/releases/tag/v1.1.4
- github.com /openchoreo/backstage-plugins/releases/tag/v1.2.1
Sources
- CVE List CVE-2026-73666
- NVD CVE-2026-73666
- Maintainer advisory GHSA-v7qx-mqhq-grvh
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
The maintainers of openchoreo/openchoreo published their own advisory on GitHub. Reviewed sources take precedence over it.