CVE-2026-40965

CRITICALPre-NVD 10.010.0—
EchelonGraph scoreMEDIUM confidence

Score 10.0 from GitHub Security Advisory (severity: CRITICAL) published 2026-06-02. a secondary CVSS source baseline 10.0; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
10.0EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 10.0Exploit: None knownExposed: 0

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

Cloud Foundry UAA versions v76.12.0 through v78.12.0 are vulnerable to a private key exposure. The server contains a vulnerability where EC (Elliptic Curve) private keys are inadvertently exposed through the public /token_keys endpoint. This endpoint is designed to provide public key material for JWT token verification but incorrectly exposes private key components for EC keys. The vulnerability affects deployments using EC keys for JWT token signing. The vulnerability does not affect RSA key configurations, only deployments using EC keys for JWT signing.

Affected versions:

  • uaa_release: v76.12.0 through v78.12.0 (inclusive); fixed in v78.13.0 or later
  • CF Deployment: v30.0.0 through v56.0.0 (inclusive); fixed in v56.1.0 or later (bundles uaa_release v78.13.0)

CVSS v3
10.0
EG Score
10.0(medium)
EG Risk
60(Track)
EG Risk 60/100SSVC: 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
Severity100% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
27%
KEV
Not listed

Published

June 1, 2026

Last Modified

July 22, 2026

Advisory Details (1)

Auto-updated Jul 29, 2026
No patch confirmed yet.
generic

CVE-2026-40965 - UAA EC Private Key Disclosure via token_keys JSON Response | Cloud Foundry

https://www.cloudfoundry.org/blog/cve-2026-40965-uaa-ec-private-key-disclosure/

Vendor Advisories for CVE-2026-40965(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 25× in last 7d / 67× 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 251 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-40965?
CVE-2026-40965 is a critical vulnerability published on June 1, 2026. Cloud Foundry UAA versions v76.12.0 through v78.12.0 are vulnerable to a private key exposure. The server contains a vulnerability where EC (Elliptic Curve) private keys are inadvertently exposed through the public /token_keys endpoint. This endpoint is designed to provide public key material for…
When was CVE-2026-40965 disclosed?
CVE-2026-40965 was first published in the National Vulnerability Database on June 1, 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-2026-40965 actively exploited?
CVE-2026-40965 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 72.8% of all scored CVEs.
What is the CVSS score of CVE-2026-40965?
CVE-2026-40965 has a CVSS v3 base score of 10.0 (NVD).
How do I remediate CVE-2026-40965?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-40965, 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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