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
7.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 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)
EPSS
1.0%
KEV
Not listed

Published

June 4, 2026

Last Modified

June 4, 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 17× in last 7d / 109× 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 159 total refreshes for this CVE.

  1. 2026-07-12 05:46 UTCEPSS rescore
  2. 2026-07-11 23:19 UTCEG score recompute
  3. 2026-07-11 23:19 UTCGHSA enrichment
  4. 2026-07-11 12:29 UTCEG score recompute
  5. 2026-07-11 12:29 UTCGHSA enrichment
  6. 2026-07-11 08:27 UTCEPSS rescore
  7. 2026-07-09 19:10 UTCEPSS rescore
  8. 2026-07-09 06:25 UTCEG score recompute
  9. 2026-07-09 06:25 UTCGHSA enrichment
  10. 2026-07-08 16:16 UTCEG score recompute
  11. 2026-07-08 16:16 UTCGHSA enrichment
  12. 2026-07-08 15:15 UTCEPSS rescore
  13. 2026-07-07 13:46 UTCEPSS rescore
  14. 2026-07-06 16:27 UTCEPSS rescore
  15. 2026-07-06 16:27 UTCEPSS rescore
  16. 2026-07-06 02:23 UTCEPSS rescore
  17. 2026-07-06 02:23 UTCEPSS rescore
  18. 2026-07-04 06:31 UTCEPSS rescore
  19. 2026-07-03 19:29 UTCEG score recompute
  20. 2026-07-03 19:29 UTCGHSA enrichment
  21. 2026-07-02 18:23 UTCEG score recompute
  22. 2026-07-02 18:23 UTCGHSA enrichment
  23. 2026-07-02 06:39 UTCEG score recompute
  24. 2026-07-02 06:39 UTCGHSA enrichment
  25. 2026-07-01 19:36 UTCEG score recompute
Show 75 more
  1. 2026-07-01 19:36 UTCGHSA enrichment
  2. 2026-07-01 15:06 UTCEPSS rescore
  3. 2026-07-01 08:35 UTCEG score recompute
  4. 2026-07-01 08:35 UTCGHSA enrichment
  5. 2026-06-30 23:22 UTCEPSS rescore
  6. 2026-06-30 21:42 UTCEG score recompute
  7. 2026-06-30 21:42 UTCGHSA enrichment
  8. 2026-06-30 08:15 UTCEG score recompute
  9. 2026-06-30 08:15 UTCGHSA enrichment
  10. 2026-06-29 21:18 UTCEG score recompute
  11. 2026-06-29 21:18 UTCGHSA enrichment
  12. 2026-06-29 14:06 UTCEPSS rescore
  13. 2026-06-29 10:28 UTCEG score recompute
  14. 2026-06-29 10:28 UTCGHSA enrichment
  15. 2026-06-28 21:34 UTCEG score recompute
  16. 2026-06-28 21:34 UTCGHSA enrichment
  17. 2026-06-28 14:07 UTCEPSS rescore
  18. 2026-06-28 10:43 UTCEG score recompute
  19. 2026-06-28 10:43 UTCGHSA enrichment
  20. 2026-06-28 04:56 UTCEPSS rescore
  21. 2026-06-27 23:41 UTCEG score recompute
  22. 2026-06-27 23:41 UTCGHSA enrichment
  23. 2026-06-27 12:51 UTCEG score recompute
  24. 2026-06-27 12:51 UTCGHSA enrichment
  25. 2026-06-27 01:56 UTCEG score recompute
  26. 2026-06-27 01:55 UTCGHSA enrichment
  27. 2026-06-26 15:05 UTCEG score recompute
  28. 2026-06-26 15:05 UTCGHSA enrichment
  29. 2026-06-25 19:55 UTCEG score recompute
  30. 2026-06-25 19:55 UTCGHSA enrichment
  31. 2026-06-25 09:05 UTCEG score recompute
  32. 2026-06-25 09:05 UTCGHSA enrichment
  33. 2026-06-24 22:13 UTCEG score recompute
  34. 2026-06-24 22:13 UTCGHSA enrichment
  35. 2026-06-24 14:05 UTCEPSS rescore
  36. 2026-06-24 09:13 UTCEG score recompute
  37. 2026-06-24 09:13 UTCGHSA enrichment
  38. 2026-06-23 21:33 UTCEPSS rescore
  39. 2026-06-23 18:55 UTCEG score recompute
  40. 2026-06-23 18:55 UTCGHSA enrichment
  41. 2026-06-23 04:37 UTCEG score recompute
  42. 2026-06-23 04:37 UTCGHSA enrichment
  43. 2026-06-22 14:25 UTCEPSS rescore
  44. 2026-06-22 14:25 UTCEPSS rescore
  45. 2026-06-21 01:59 UTCEPSS rescore
  46. 2026-06-20 12:27 UTCEG score recompute
  47. 2026-06-20 12:27 UTCGHSA enrichment
  48. 2026-06-19 20:25 UTCEG score recompute
  49. 2026-06-19 20:25 UTCGHSA enrichment
  50. 2026-06-19 19:25 UTCEPSS rescore
  51. 2026-06-19 04:28 UTCEG score recompute
  52. 2026-06-19 04:27 UTCGHSA enrichment
  53. 2026-06-18 17:52 UTCEPSS rescore
  54. 2026-06-18 17:52 UTCEPSS rescore
  55. 2026-06-18 16:28 UTCEG score recompute
  56. 2026-06-18 16:28 UTCGHSA enrichment
  57. 2026-06-18 04:17 UTCEG score recompute
  58. 2026-06-18 04:17 UTCGHSA enrichment
  59. 2026-06-17 17:26 UTCEG score recompute
  60. 2026-06-17 17:26 UTCGHSA enrichment
  61. 2026-06-17 04:56 UTCEG score recompute
  62. 2026-06-17 04:56 UTCGHSA enrichment
  63. 2026-06-16 18:07 UTCEG score recompute
  64. 2026-06-16 18:07 UTCGHSA enrichment
  65. 2026-06-16 07:05 UTCEG score recompute
  66. 2026-06-16 07:05 UTCGHSA enrichment
  67. 2026-06-15 20:15 UTCEG score recompute
  68. 2026-06-15 20:15 UTCGHSA enrichment
  69. 2026-06-15 17:49 UTCEPSS rescore
  70. 2026-06-15 09:18 UTCEG score recompute
  71. 2026-06-15 09:18 UTCGHSA enrichment
  72. 2026-06-14 22:28 UTCEG score recompute
  73. 2026-06-14 22:28 UTCGHSA enrichment
  74. 2026-06-14 11:38 UTCEG score recompute
  75. 2026-06-14 11:38 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. 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 1.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
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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