CVE-2026-73843

CRITICALPre-NVD 9.69.6
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

This critical-severity CVE scores 9.6 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.5% (39th percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from a secondary CVSS source
Sources: EPSS, a secondary CVSS source
9.6EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 9.6Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

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.

CVSS v3
9.6
EG Score
9.6CRITICALmedium confidence
EG Risk
43
EG Risk 43/100

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 (value × EchelonGraph’s weight)
Severity96% × 45%
The EG Score, 9.6 of 10.
Exploitation0.5% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.5%
EPSS %ILE
39th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track* at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

August 13, 2026

Last Modified

September 8, 2026

Advisory Details (7)

Auto-updated Oct 7, 2026
Patch available. Sources: github_release, github, github_commit, github_pr.
GitHub advisoryMentions a patch (unverified)

Unauthenticated access to data-plane operations via OpenChoreo cluster-gateway management APIs · Advisory · openchoreo/openchoreo · GitHub

https://github.com/openchoreo/openchoreo/security/advisories/GHSA-qh9r-j7rp-4x2m
GitHub release Patch Available

v1.1.2

Patch available: openchoreo/openchoreo v1.1.2

https://github.com/openchoreo/openchoreo/releases/tag/v1.1.2
GitHub release Patch Available

v1.0.2

Patch available: openchoreo/openchoreo v1.0.2

https://github.com/openchoreo/openchoreo/releases/tag/v1.0.2
GitHub pull request

fix: move cluster gateway internal routes to a new port

Fix merged in openchoreo/openchoreo PR #4122 on 2026-07-09 — awaiting tagged release

https://github.com/openchoreo/openchoreo/pull/4122
GitHub commit

commit b42eeb0f5dce (openchoreo/openchoreo)

Fix landed in openchoreo/openchoreo commit b42eeb0f5dce — awaiting tagged release

https://github.com/openchoreo/openchoreo/commit/b42eeb0f5dce95195a9781d7c5a1fe9e38f5da8f
GitHub commit

commit 0aa0ffe1623b (openchoreo/openchoreo)

Fix landed in openchoreo/openchoreo commit 0aa0ffe1623b — awaiting tagged release

https://github.com/openchoreo/openchoreo/commit/0aa0ffe1623bd8eb4235cb2a5854336695953c3a
GitHub commit

commit 047d80ddc63b (openchoreo/openchoreo)

Fix landed in openchoreo/openchoreo commit 047d80ddc63b — awaiting tagged release

https://github.com/openchoreo/openchoreo/commit/047d80ddc63b4b4b9dd67044d5cffcdbd77685ce

Vendor Advisories for CVE-2026-73843(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(1 across 1 ecosystem)
Go(1)
PackageVulnerable rangeFix by version rangeDependents
github.com/openchoreo/openchoreo—
  • every version up to 1.0.2: fixed in 1.0.2
  • 1.1.0 up to 1.1.2: fixed in 1.1.2
—

Weakness Classification(3)

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

Data Freshness Timeline

(refreshed 13× in last 7d / 51× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 98 of 111 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 2 repeat rows among the latest 100 are merged into the row they repeat. The 13 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-14 01:43 UTCEG score recompute
  2. 2026-10-13 16:35 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  3. 2026-10-12 21:54 UTCEG score recompute
  4. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  5. 2026-10-12 15:40 UTCEG score recompute
  6. 2026-10-11 19:26 UTCEG score recompute
  7. 2026-10-11 16:42 UTCEG score recompute
  8. 2026-10-11 14:01 UTCEG score recompute
  9. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  10. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  11. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  12. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  13. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  14. 2026-10-06 17:23 UTCEG score recompute
  15. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  16. 2026-10-05 18:31 UTCEG score recompute
  17. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  18. 2026-10-05 02:32 UTCEG score recompute
  19. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  20. 2026-10-03 19:43 UTCEG score recompute
  21. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  22. 2026-10-02 21:51 UTCEG score recompute
  23. 2026-10-02 07:23 UTCEG score recompute
  24. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  25. 2026-09-30 21:43 UTCEG score recompute
Show 73 more
  1. 2026-09-29 15:24 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  2. 2026-09-29 03:23 UTCEG score recompute
  3. 2026-09-28 13:52 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  4. 2026-09-27 16:49 UTCEG score recompute
  5. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  6. 2026-09-27 09:39 UTCEG score recompute
  7. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  8. 2026-09-26 00:28 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  9. 2026-09-25 03:25 UTCEG score recompute
  10. 2026-09-23 20:47 UTCEG score recompute
  11. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  12. 2026-09-22 20:57 UTCEG score recompute
  13. 2026-09-21 23:45 UTCEG score recompute
  14. 2026-09-21 21:09 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  15. 2026-09-21 00:07 UTCEG score recompute
  16. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  17. 2026-09-19 19:40 UTCEG score recompute
  18. 2026-09-18 22:46 UTCEG score recompute
  19. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  20. 2026-09-17 22:16 UTCEG score recompute
  21. 2026-09-16 23:50 UTCEG score recompute
  22. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  23. 2026-09-16 10:27 UTCEG score recompute
  24. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  25. 2026-09-15 06:00 UTCEG score recompute
  26. 2026-09-15 03:12 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  27. 2026-09-13 17:07 UTCEG score recompute
  28. 2026-09-12 17:25 UTCEG score recompute
  29. 2026-09-12 15:02 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  30. 2026-09-11 17:41 UTCEG score recompute
  31. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  32. 2026-09-11 09:44 UTCEG score recompute
  33. 2026-09-10 09:44 UTCEG score recompute
  34. 2026-09-10 09:35 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  35. 2026-09-09 04:51 UTCEG score recompute
  36. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  37. 2026-09-07 16:27 UTCEG score recompute
  38. 2026-09-06 16:19 UTCEG score recompute
  39. 2026-09-06 13:48 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  40. 2026-09-05 16:37 UTCEG score recompute
  41. 2026-09-04 14:13 UTCEG score recompute
  42. 2026-09-04 06:12 UTCEG score recompute
  43. 2026-09-04 05:07 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  44. 2026-09-02 22:59 UTCEG score recompute
  45. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  46. 2026-09-01 15:13 UTCEG score recompute
  47. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  48. 2026-09-01 06:10 UTCEG score recompute
  49. 2026-09-01 04:40 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  50. 2026-08-30 20:03 UTCEG score recompute
  51. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  52. 2026-08-30 04:15 UTCEG score recompute
  53. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  54. 2026-08-29 06:58 UTCEG score recompute
  55. 2026-08-28 21:42 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  56. 2026-08-27 15:10 UTCEG score recompute
  57. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  58. 2026-08-26 18:43 UTCEG score recompute
  59. 2026-08-26 14:47 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  60. 2026-08-25 17:28 UTCEG score recompute
  61. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  62. 2026-08-24 17:18 UTCEG score recompute
  63. 2026-08-24 13:21 UTCEG score recompute
  64. 2026-08-23 01:46 UTCEG score recompute
  65. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  66. 2026-08-22 02:04 UTCEG score recompute
  67. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  68. 2026-08-21 02:20 UTCEG score recompute
  69. 2026-08-20 22:56 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  70. 2026-08-19 18:41 UTCEG score recompute
  71. 2026-08-19 17:04 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  72. 2026-08-18 14:59 UTCEG score recompute
  73. 2026-08-18 13:49 UTCEPSS rescoreEPSS 0.3% · 21st percentile

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Frequently asked(5)

What is CVE-2026-73843?
CVE-2026-73843 is a critical-severity vulnerability; its CVE record was published on August 13, 2026. 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/…
When was the CVE record for CVE-2026-73843 published?
The CVE record for CVE-2026-73843 was published on August 13, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of September 8, 2026; the record at its source may have been updated since.
Is CVE-2026-73843 actively exploited?
CVE-2026-73843 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (39th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-73843?
CVE-2026-73843 has a CVSS base score of 9.6 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-73843?
A fix for CVE-2026-73843 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-73843 are linked in the Vendor Advisories panel on this page.

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