CVE-2026-41859

HIGHPre-NVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-06-04. a secondary CVSS source baseline 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
7.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.8Exploit: NoneExposed: 0

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

A network man-in-the-middle between nats-sync and the BOSH director can steal the director credentials (Basic auth header or UAA client secret) and can tamper with the VM list that is written into the NATS authorization file. Stolen credentials grant administrative director access. UsersSync#bosh_api_response_body builds a Net::HTTP client with verify_mode = OpenSSL::SSL::VERIFY_NONE for every director call (/info, /deployments, /deployments//vms).

Affected versions:

  • BOSH: all versions prior to v282.1.9 (inclusive); fixed in v282.1.9 or later

CVSS v3
7.8
EG Score
7.8(medium)
EG Risk
35(Track)
EG Risk 35/100SSVC: 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
Severity78% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
1%
KEV
Not listed

Published

June 4, 2026

Last Modified

July 22, 2026

Advisory Details (1)

Auto-updated Jun 4, 2026
No patch confirmed yet.
generic

CVE-2026-41859 - Missing TLS in NATS sync | Cloud Foundry

https://www.cloudfoundry.org/blog/cve-2026-41859-missing-tls-in-nats-sync/

Vendor Advisories for CVE-2026-41859(1)

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

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 9× 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.

Showing the most recent 100 of 117 total refreshes for this CVE.

  1. 2026-07-26 22:28 UTCEG score recompute
  2. 2026-07-26 22:28 UTCGHSA enrichment
  3. 2026-07-25 14:18 UTCEPSS rescore
  4. 2026-07-24 14:17 UTCEPSS rescore
  5. 2026-07-23 14:18 UTCEPSS rescore
  6. 2026-07-23 03:11 UTCEG score recompute
  7. 2026-07-22 14:08 UTCEPSS rescore
  8. 2026-07-21 15:24 UTCEPSS rescore
  9. 2026-07-20 17:08 UTCEPSS rescore
  10. 2026-07-19 14:31 UTCEPSS rescore
  11. 2026-07-16 17:03 UTCEPSS rescore
  12. 2026-07-16 00:24 UTCGHSA enrichment
  13. 2026-07-15 16:57 UTCEPSS rescore
  14. 2026-07-14 14:15 UTCGHSA enrichment
  15. 2026-07-14 03:25 UTCGHSA enrichment
  16. 2026-07-13 22:30 UTCEPSS rescore
  17. 2026-07-13 06:13 UTCEPSS rescore
  18. 2026-07-13 06:13 UTCEPSS rescore
  19. 2026-07-12 05:46 UTCEPSS rescore
  20. 2026-07-11 23:19 UTCGHSA enrichment
  21. 2026-07-11 12:29 UTCGHSA enrichment
  22. 2026-07-11 08:27 UTCEPSS rescore
  23. 2026-07-09 19:10 UTCEPSS rescore
  24. 2026-07-09 06:25 UTCGHSA enrichment
  25. 2026-07-08 16:16 UTCGHSA enrichment
Show 75 more
  1. 2026-07-08 15:15 UTCEPSS rescore
  2. 2026-07-07 13:46 UTCEPSS rescore
  3. 2026-07-06 16:27 UTCEPSS rescore
  4. 2026-07-06 16:27 UTCEPSS rescore
  5. 2026-07-06 02:23 UTCEPSS rescore
  6. 2026-07-06 02:23 UTCEPSS rescore
  7. 2026-07-04 06:31 UTCEPSS rescore
  8. 2026-07-03 19:29 UTCGHSA enrichment
  9. 2026-07-02 18:23 UTCGHSA enrichment
  10. 2026-07-02 06:39 UTCGHSA enrichment
  11. 2026-07-01 19:36 UTCGHSA enrichment
  12. 2026-07-01 15:06 UTCEPSS rescore
  13. 2026-07-01 08:35 UTCGHSA enrichment
  14. 2026-06-30 23:22 UTCEPSS rescore
  15. 2026-06-30 21:42 UTCGHSA enrichment
  16. 2026-06-30 08:15 UTCGHSA enrichment
  17. 2026-06-29 21:18 UTCGHSA enrichment
  18. 2026-06-29 14:06 UTCEPSS rescore
  19. 2026-06-29 10:28 UTCGHSA enrichment
  20. 2026-06-28 21:34 UTCGHSA enrichment
  21. 2026-06-28 14:07 UTCEPSS rescore
  22. 2026-06-28 10:43 UTCGHSA enrichment
  23. 2026-06-28 04:56 UTCEPSS rescore
  24. 2026-06-27 23:41 UTCGHSA enrichment
  25. 2026-06-27 12:51 UTCGHSA enrichment
  26. 2026-06-27 01:55 UTCGHSA enrichment
  27. 2026-06-26 15:05 UTCGHSA enrichment
  28. 2026-06-25 19:55 UTCGHSA enrichment
  29. 2026-06-25 09:05 UTCGHSA enrichment
  30. 2026-06-24 22:13 UTCGHSA enrichment
  31. 2026-06-24 14:05 UTCEPSS rescore
  32. 2026-06-24 09:13 UTCGHSA enrichment
  33. 2026-06-23 21:33 UTCEPSS rescore
  34. 2026-06-23 18:55 UTCGHSA enrichment
  35. 2026-06-23 04:37 UTCGHSA enrichment
  36. 2026-06-22 14:25 UTCEPSS rescore
  37. 2026-06-22 14:25 UTCEPSS rescore
  38. 2026-06-21 01:59 UTCEPSS rescore
  39. 2026-06-20 12:27 UTCGHSA enrichment
  40. 2026-06-19 20:25 UTCGHSA enrichment
  41. 2026-06-19 19:25 UTCEPSS rescore
  42. 2026-06-19 04:27 UTCGHSA enrichment
  43. 2026-06-18 17:52 UTCEPSS rescore
  44. 2026-06-18 17:52 UTCEPSS rescore
  45. 2026-06-18 16:28 UTCGHSA enrichment
  46. 2026-06-18 04:17 UTCGHSA enrichment
  47. 2026-06-17 17:26 UTCGHSA enrichment
  48. 2026-06-17 04:56 UTCGHSA enrichment
  49. 2026-06-16 18:07 UTCGHSA enrichment
  50. 2026-06-16 07:05 UTCGHSA enrichment
  51. 2026-06-15 20:15 UTCGHSA enrichment
  52. 2026-06-15 17:49 UTCEPSS rescore
  53. 2026-06-15 09:18 UTCGHSA enrichment
  54. 2026-06-14 22:28 UTCGHSA enrichment
  55. 2026-06-14 11:38 UTCGHSA enrichment
  56. 2026-06-14 00:48 UTCGHSA enrichment
  57. 2026-06-13 23:00 UTCEPSS rescore
  58. 2026-06-13 13:57 UTCGHSA enrichment
  59. 2026-06-13 03:06 UTCGHSA enrichment
  60. 2026-06-12 23:12 UTCEPSS rescore
  61. 2026-06-12 23:12 UTCEPSS rescore
  62. 2026-06-12 16:15 UTCGHSA enrichment
  63. 2026-06-12 05:26 UTCGHSA enrichment
  64. 2026-06-11 18:36 UTCGHSA enrichment
  65. 2026-06-11 14:00 UTCEPSS rescore
  66. 2026-06-11 07:46 UTCGHSA enrichment
  67. 2026-06-10 22:18 UTCEPSS rescore
  68. 2026-06-10 20:57 UTCGHSA enrichment
  69. 2026-06-10 13:22 UTCEPSS rescore
  70. 2026-06-10 13:22 UTCEPSS rescore
  71. 2026-06-10 10:07 UTCGHSA enrichment
  72. 2026-06-09 23:18 UTCGHSA enrichment
  73. 2026-06-09 12:28 UTCGHSA enrichment
  74. 2026-06-09 01:39 UTCGHSA enrichment
  75. 2026-06-08 14:48 UTCGHSA enrichment

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-41859?
CVE-2026-41859 is a high vulnerability published on June 4, 2026. A network man-in-the-middle between nats-sync and the BOSH director can steal the director credentials (Basic auth header or UAA client secret) and can tamper with the VM list that is written into the NATS authorization file. Stolen credentials grant administrative director access.…
When was CVE-2026-41859 disclosed?
CVE-2026-41859 was first published in the National Vulnerability Database on June 4, 2026, with the most recent update on July 22, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-41859 actively exploited?
CVE-2026-41859 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 99.1% of all scored CVEs.
What is the CVSS score of CVE-2026-41859?
CVE-2026-41859 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2026-41859?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-41859, 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.

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