CVE-2026-3514

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-06-02. a secondary CVSS source baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
7.5
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.5Exploit: NoneExposed: 0

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

In version 3.6.19 of prefecthq/prefect, an authentication bypass vulnerability exists due to the improper handling of URL path exemptions for health check probes. Specifically, the authentication middleware exempts any URL path ending with 'health' or 'ready' from authentication checks. This allows an attacker to create resources with names ending in 'health' or 'ready' and access them without authentication. Affected endpoints include those for variables, flows, work pools, work queues, and deployments. This vulnerability can lead to unauthorized access to sensitive information, such as API keys and database credentials, stored in Prefect Variables.

CVSS v3
7.5
EG Score
7.5(medium)
EPSS
37.8%
KEV
Not listed

Published

June 2, 2026

Last Modified

June 3, 2026

Advisory Details (2)

Auto-updated Jun 6, 2026
Patch available. Sources: github_commit.
generic

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github_commit Patch Available

commit e21617125335 (prefecthq/prefect)

Patch available: prefecthq/prefect 3.7.1.dev1 (contains commit e21617125335)

https://github.com/prefecthq/prefect/commit/e21617125335025b4b27e7d6f0ca028e8e8f3b79

Vendor Advisories for CVE-2026-3514(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)
PyPI(1)
PackageVulnerable rangeFixed inDependents
prefect0.10.0 ... 3.6.9 (738 versions)3.6.22.dev7—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 15× in last 7d / 99× 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 153 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-3514?
CVE-2026-3514 is a high vulnerability published on June 2, 2026. In version 3.6.19 of prefecthq/prefect, an authentication bypass vulnerability exists due to the improper handling of URL path exemptions for health check probes. Specifically, the authentication middleware exempts any URL path ending with 'health' or 'ready' from authentication checks. This allows…
When was CVE-2026-3514 disclosed?
CVE-2026-3514 was first published in the National Vulnerability Database on June 2, 2026, with the most recent update on June 3, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-3514 actively exploited?
CVE-2026-3514 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 37.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-3514?
CVE-2026-3514 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-3514?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-3514, 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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