CVE-2026-4035

HIGHNVD 7.79.1▲
EchelonGraph scoreMEDIUM confidence

Score 9.1 from GitHub Security Advisory (severity: CRITICAL) published 2026-06-03. NVD baseline CVSS 7.7; sources differ by 1.4.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Elevated
7.7
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.7Exploit: NoneExposed: 0

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

A vulnerability in mlflow/mlflow versions prior to 3.11.0 allows for the resolution of environment variables in AI Gateway secrets, which can be exploited to exfiltrate sensitive server-side environment credentials to an attacker-controlled endpoint. This issue arises because the api_key field in gateway secrets can accept $ENV_VAR references, which are resolved against the MLflow server's environment during runtime. The resolved secrets are then sent in provider authentication headers to the configured upstream api_base. This vulnerability can be exploited by low-privileged authenticated users in basic-auth deployments or by unauthenticated users in default deployments without basic-auth. The impact includes potential leakage of sensitive credentials such as cloud artifact credentials (AWS_ACCESS_KEY_ID, AWS_SECRET_ACCESS_KEY), which could lead to artifact poisoning and cross-boundary code execution in downstream environments. The issue is fixed in version 3.11.0.

CVSS v3
7.7
EG Score
9.1(medium)
EG Risk
—
EPSS
35.6%
KEV
Not listed

Published

June 3, 2026

Last Modified

July 21, 2026

Advisory Details (2)

Auto-updated Jun 3, 2026
Upstream fix merged — awaiting tagged release. Sources: github_commit.
generic

huntr - The world’s first bug bounty platform for AI/ML

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github_commit

commit 4a3f2f720cb4 (mlflow/mlflow)

Fix landed in mlflow/mlflow commit 4a3f2f720cb4 — awaiting tagged release

https://github.com/mlflow/mlflow/commit/4a3f2f720cb4f058c9e0c5b883e0acc9ab64a7f3

Vendor Advisories for CVE-2026-4035(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
mlflow0.0.1 ... 3.9.0rc0 (175 versions)3.11.0—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 8× in last 7d / 86× 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 219 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-4035?
CVE-2026-4035 is a high vulnerability published on June 3, 2026. A vulnerability in mlflow/mlflow versions prior to 3.11.0 allows for the resolution of environment variables in AI Gateway secrets, which can be exploited to exfiltrate sensitive server-side environment credentials to an attacker-controlled endpoint. This issue arises because the apikey field in…
When was CVE-2026-4035 disclosed?
CVE-2026-4035 was first published in the National Vulnerability Database on June 3, 2026, with the most recent update on July 21, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-4035 actively exploited?
CVE-2026-4035 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 35.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-4035?
CVE-2026-4035 has a CVSS v3 base score of 7.7 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.1.
How do I remediate CVE-2026-4035?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-4035, 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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