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HIGH severity

CVE-2021-41266 — console

HIGHFix: minio/console#1217

CVE-2021-41266 is a high-severity (CVSS 8.6) Missing Authentication vulnerability in github.com/minio/console. 1 public exploit reference exists, so weaponization risk is real. A fix is available for github.com/minio/console — see the affected versions and patch details below.

Authentication bypass issue in the Operator Console

Also known asGO-2022-0261
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
1 known
Exploitation data as of Oct 12, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
48.1%probability of exploitation in next 30 days
High Risk-0.28%
Lower risk than most CVEs99th percentile — riskier than 99% of all scored CVEsHighest risk
34.8%55.9%77.0%98.1%86.2%48.1%Apr 26Aug 26Oct 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

CVE-2021-41266 by exploitation likelihood (EPSS) against impact (CVSS). Outside the shaded patch-first corner.

Where this sits among everything scored

Of 385,738 CVEs with a current EPSS score, this one falls in the 10–50% band (highlighted). Counts from FIRST.org, log-scaled.

Real-World Exposure

1 pkg affected
🐹github.com/minio/console

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Go packages — download data is not available via public APIs for these ecosystems.

Description

During an internal security audit, we detected an authentication bypass issue in the Operator Console when an external IDP is enabled. The security issue has been reported internally. We have not observed this exploit in the wild or reported elsewhere in the community at large. All users are advised to upgrade ASAP.

Impact

All users on release v0.12.2 and before are affected.

Patches

This issue was fixed by PR https://github.com/minio/console/pull/1217, users should upgrade to latest release.

Workarounds

Add automountServiceAccountToken: false to the operator-console deployment in Kubernetes so no service account token will get mounted inside the pod, then disable the external identity provider authentication by unset the CONSOLE_IDP_URL, CONSOLE_IDP_CLIENT_ID, CONSOLE_IDP_SECRET and CONSOLE_IDP_CALLBACK environment variable and instead use the Kubernetes service account token.

References

#1217 for more information on the fix and how it was fixed.

For more information

If you have any questions or comments about this advisory:

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
🐹Gogithub.com/minio/consoleall versions0.12.3go get github.com/minio/console@v0.12.3

Affected Products

1 product · 1 configurations
Application
minio consolemin
< 0.12.3
range
Exploits & PoCs
1

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

Minio console is a graphical user interface for the for MinIO operator. …

github.comNVDNov 2021

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for github.com/minio/console, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update github.com/minio/console to 0.12.3 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2021-41266 is resolved across your whole dependency graph.

  3. Workarounds

    Put an independent control in front of the weakness: restrict the affected endpoint or interface to trusted networks, require an additional authentication factor or proxy-level check, and invalidate existing sessions and credentials in case the flaw has already been used.

How to detect CVE-2021-41266

A community-maintained Nuclei template exists for this CVE. You can scan for it directly:

nuclei -id cve-2021-41266 -u https://target
Template
MinIO Operator Console Authentication Bypass
Severity
critical
Impact
An attacker can bypass authentication and gain unauthorized access to the MinIO Operator Console.
Remediation
Update to v.0.12.3 or higher. Users unable to upgrade should add automountServiceAccountToken: false to the operator-console deployment in Kubernetes so no service account token will get mounted inside the pod, then disable the external identity provider authentication by unset the CONSOLE_IDP_URL, CONSOLE_IDP_CLIENT_ID, CONSOLE_IDP_SECRET and CONSOLE_IDP_CALLBACK environment variable and instead use the Kubernetes service account token.

Template by ProjectDiscovery nuclei-templates (alevsk), MIT licensed. View the full template. Scan only systems you are authorised to test.

Frequently Asked Questions

During an internal security audit, we detected an authentication bypass issue in the Operator Console when an external IDP is enabled. The security issue has been reported internally. We have not observed this exploit in the wild or reported elsewhere in the community at large. All users are advised to upgrade ASAP. ### Impact All users on release v0.12.2 and before are affected. ### Patches This issue was fixed by PR https://github.com/minio/console/pull/1217, users should upgrade to latest release. ### Workarounds Add `automountServiceAccountToken: false` to the operator-console deploy
O3 Security · Impact-Aware SCA

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CVE-2021-41266: console Auth Bypass — Fixed in 0.12.3