CVE-2026-73666

HIGHPre-NVD 8.28.2—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.2 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.5%, top 59% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
8.2EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.2Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
8.2
EG Score
8.2(medium)
EG Risk
52(Track)
EG Risk 52/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity82% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
41%
KEV
Not listed

Published

August 13, 2026

Last Modified

September 8, 2026

Advisory Details (8)

Auto-updated Aug 13, 2026
Upstream fix merged — awaiting tagged release. Sources: github_commit, github_pr.
github_pr

backport: fix: enable dangerous auth flags only in guest mode - #712

Fix merged in openchoreo/backstage-plugins PR #716 on 2026-07-30 — awaiting tagged release

https://github.com/openchoreo/backstage-plugins/pull/716
github_pr

backport: fix: enable dangerous auth flags only in guest mode

Fix merged in openchoreo/backstage-plugins PR #713 on 2026-07-30 — awaiting tagged release

https://github.com/openchoreo/backstage-plugins/pull/713
github_pr

backport: fix: enable dangerous auth flags only in guest mode

Fix merged in openchoreo/backstage-plugins PR #712 on 2026-07-30 — awaiting tagged release

https://github.com/openchoreo/backstage-plugins/pull/712
github_pr

fix: enable dangerous auth flags only in guest mode

Fix merged in openchoreo/backstage-plugins PR #709 on 2026-07-30 — awaiting tagged release

https://github.com/openchoreo/backstage-plugins/pull/709
github_commit

commit fdaceeb73793 (openchoreo/backstage-plugins)

Fix landed in openchoreo/backstage-plugins commit fdaceeb73793 — awaiting tagged release

https://github.com/openchoreo/backstage-plugins/commit/fdaceeb737938e830c48a150d5bec24f5f487e52
github_commit

commit f6df89c15834 (openchoreo/backstage-plugins)

Fix landed in openchoreo/backstage-plugins commit f6df89c15834 — awaiting tagged release

https://github.com/openchoreo/backstage-plugins/commit/f6df89c15834506902b2f706a9e8fbe1f6ef1474
github_commit

commit dfa3fc8bd1ff (openchoreo/backstage-plugins)

Fix landed in openchoreo/backstage-plugins commit dfa3fc8bd1ff — awaiting tagged release

https://github.com/openchoreo/backstage-plugins/commit/dfa3fc8bd1ffef1346442c891e3e3dd54bc26501
github_commit

commit 114a21568992 (openchoreo/backstage-plugins)

Fix landed in openchoreo/backstage-plugins commit 114a21568992 — awaiting tagged release

https://github.com/openchoreo/backstage-plugins/commit/114a215689924b917da5fd28c56e679aaccaef07

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 12× in last 7d / 51× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-09-21 04:15 UTCEG score recompute
  2. 2026-09-20 20:16 UTCEPSS rescore
  3. 2026-09-20 03:02 UTCEG score recompute
  4. 2026-09-19 01:50 UTCEG score recompute
  5. 2026-09-18 19:28 UTCEPSS rescore
  6. 2026-09-18 00:38 UTCEG score recompute
  7. 2026-09-16 23:51 UTCEG score recompute
  8. 2026-09-16 14:08 UTCEPSS rescore
  9. 2026-09-16 10:28 UTCEG score recompute
  10. 2026-09-16 05:15 UTCEPSS rescore
  11. 2026-09-15 09:09 UTCEG score recompute
  12. 2026-09-15 03:12 UTCEPSS rescore
  13. 2026-09-14 04:58 UTCEG score recompute
  14. 2026-09-12 15:46 UTCEG score recompute
  15. 2026-09-12 15:02 UTCEPSS rescore
  16. 2026-09-11 15:00 UTCEG score recompute
  17. 2026-09-11 14:53 UTCEPSS rescore
  18. 2026-09-10 14:12 UTCEG score recompute
  19. 2026-09-10 09:35 UTCEPSS rescore
  20. 2026-09-09 09:41 UTCEG score recompute
  21. 2026-09-08 22:01 UTCEPSS rescore
  22. 2026-09-07 18:11 UTCEG score recompute
  23. 2026-09-06 17:24 UTCEG score recompute
  24. 2026-09-06 13:48 UTCEPSS rescore
  25. 2026-09-05 16:37 UTCEG score recompute
Show 49 more
  1. 2026-09-04 15:46 UTCEG score recompute
  2. 2026-09-04 05:07 UTCEPSS rescore
  3. 2026-09-03 01:28 UTCEG score recompute
  4. 2026-09-02 14:12 UTCEPSS rescore
  5. 2026-09-01 23:40 UTCEG score recompute
  6. 2026-09-01 13:54 UTCEPSS rescore
  7. 2026-09-01 11:17 UTCEG score recompute
  8. 2026-09-01 04:40 UTCEPSS rescore
  9. 2026-09-01 04:40 UTCEPSS rescore
  10. 2026-08-30 21:10 UTCEG score recompute
  11. 2026-08-30 19:18 UTCEPSS rescore
  12. 2026-08-30 19:17 UTCEPSS rescore
  13. 2026-08-30 08:46 UTCEG score recompute
  14. 2026-08-30 01:22 UTCEPSS rescore
  15. 2026-08-29 07:00 UTCEG score recompute
  16. 2026-08-28 21:42 UTCEPSS rescore
  17. 2026-08-27 16:38 UTCEG score recompute
  18. 2026-08-27 14:25 UTCEPSS rescore
  19. 2026-08-26 15:42 UTCEG score recompute
  20. 2026-08-26 14:47 UTCEPSS rescore
  21. 2026-08-25 14:52 UTCEG score recompute
  22. 2026-08-25 13:49 UTCEPSS rescore
  23. 2026-08-25 02:29 UTCEG score recompute
  24. 2026-08-24 14:06 UTCEG score recompute
  25. 2026-08-23 00:53 UTCEG score recompute
  26. 2026-08-23 00:19 UTCEPSS rescore
  27. 2026-08-22 00:07 UTCEG score recompute
  28. 2026-08-21 23:49 UTCEPSS rescore
  29. 2026-08-20 23:19 UTCEG score recompute
  30. 2026-08-20 22:56 UTCEPSS rescore
  31. 2026-08-19 22:33 UTCEG score recompute
  32. 2026-08-19 17:04 UTCEPSS rescore
  33. 2026-08-18 21:42 UTCEG score recompute
  34. 2026-08-18 13:49 UTCEPSS rescore
  35. 2026-08-18 13:49 UTCEPSS rescore
  36. 2026-08-17 20:56 UTCEG score recompute
  37. 2026-08-17 13:47 UTCEPSS rescore
  38. 2026-08-16 20:09 UTCEG score recompute
  39. 2026-08-16 14:56 UTCEPSS rescore
  40. 2026-08-16 14:56 UTCEPSS rescore
  41. 2026-08-16 07:45 UTCEG score recompute
  42. 2026-08-16 02:15 UTCEPSS rescore
  43. 2026-08-15 06:59 UTCEG score recompute
  44. 2026-08-15 01:31 UTCEPSS rescore
  45. 2026-08-14 18:35 UTCEG score recompute
  46. 2026-08-14 18:09 UTCEG score recompute
  47. 2026-08-13 22:25 UTCEG score recompute
  48. 2026-08-13 21:52 UTCEG score recompute
  49. 2026-08-13 21:51 UTCMITRE cvelistV5first tracked

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Frequently asked(5)

What is CVE-2026-73666?
CVE-2026-73666 is a high vulnerability published on August 13, 2026. 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…
When was CVE-2026-73666 disclosed?
CVE-2026-73666 was first published in the National Vulnerability Database on August 13, 2026, with the most recent update on September 8, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-73666 actively exploited?
CVE-2026-73666 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 59.4% of all scored CVEs.
What is the CVSS score of CVE-2026-73666?
CVE-2026-73666 has a CVSS v3 base score of 8.2 (NVD).
How do I remediate CVE-2026-73666?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-73666, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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