CVE-2021-41137

HIGHNVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.8 under NVD CVSS v3. EPSS exploit probability: 1.2%, top 34% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 8.8Exploit: None knownExposed: 0

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

Minio is a Kubernetes native application for cloud storage. All users on release RELEASE.2021-10-10T16-53-30Z are affected by a vulnerability that involves bypassing policy restrictions on regular users. Normally, checkKeyValid() should return owner true for rootCreds. In the affected version, policy restriction did not work properly for users who did not have service (svc) or security token service (STS) accounts. This issue is fixed in RELEASE.2021-10-13T00-23-17Z. A downgrade back to release RELEASE.2021-10-08T23-58-24Z is available as a workaround.

CVSS v3
8.8
EG Score
8.8(medium)
EG Risk
45(Track)
EG Risk 45/100SSVC: 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
Severity88% × 45%
Exploitation1% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
68%
KEV
Not listed

Published

October 13, 2021

Last Modified

November 21, 2024

Advisory Details (4)

Auto-updated Jul 30, 2026
Patch available. Sources: github_commit, github_pr, github.
github Patch Available

Bypassing policy restrictions on regular users · Advisory · minio/minio · GitHub

https://github.com/minio/minio/security/advisories/GHSA-v64v-g97p-577c
github_pr

checkKeyValid() should return owner true for rootCreds

Fix merged in minio/minio PR #13422 on 2021-10-12 — awaiting tagged release

https://github.com/minio/minio/pull/13422
github_pr

fix: disallow invalid x-amz-security-token for root credentials

Fix merged in minio/minio PR #13388 on 2021-10-10 — awaiting tagged release

https://github.com/minio/minio/pull/13388
github_commit

commit 415bbc74aacd (minio/minio)

Fix landed in minio/minio commit 415bbc74aacd — awaiting tagged release

https://github.com/minio/minio/commit/415bbc74aacd53a120e54a663e941b1809982dbd

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 6× in last 7d / 31× 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 152 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2021-41137?
CVE-2021-41137 is a high vulnerability published on October 13, 2021. Minio is a Kubernetes native application for cloud storage. All users on release RELEASE.2021-10-10T16-53-30Z are affected by a vulnerability that involves bypassing policy restrictions on regular users. Normally, checkKeyValid() should return owner true for rootCreds. In the affected version,…
When was CVE-2021-41137 disclosed?
CVE-2021-41137 was first published in the National Vulnerability Database on October 13, 2021, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2021-41137 actively exploited?
CVE-2021-41137 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 31.8% of all scored CVEs.
What is the CVSS score of CVE-2021-41137?
CVE-2021-41137 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2021-41137?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-41137, 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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