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CVE-2021-41266

68
FAUCET Score

CVE-2021-41266 is a critical authentication bypass vulnerability affecting Minio console versions v0.12.2 and earlier, specifically when an external Identity Provider (IDP) is enabled. This flaw allows unauthenticated attackers to gain full control over the Minio console, leading to complete compromise of confidentiality, integrity, and availability. While not currently listed on the CISA KEV catalog, public Nuclei templates exist for detecting this vulnerability, indicating potential for exploitation, though there is no evidence of active exploitation or significant community discussion. Organizations are strongly advised to update to Minio console v0.12.3 or newer, or implement the provided mitigation steps if immediate upgrade is not feasible.

Impacted Technologies

VendorProductVersion(s)CPE
< 0.12.3CPE matchmatch criteria
cpe:2.3:a:min:minio_console:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.6HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
LOW
Availability Impact
LOW
Exploitability Score
3.9
Impact Score
4.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
48.41%
Probability of exploitation in next 30 days
EPSS Percentile
98.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
Nuclei: CVE-2021-41266 · Dec 1, 2021
This CVE's current EPSS score of 0.4841 is in the 96th percentile among its peer group of 36,862 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
gopatch availablevia ghsa
Product: github.com/minio/consoleFixed in: 0.12.3

Vendor Advisories (1)

goGHSA-4999-659w-mq36high

Authentication bypass issue in the Operator Console

Nov 15, 2021

References

github.com / minio/console/pull/1217
ExploitPatchThird Party Advisory
github.com / minio/console/security/advisories/GHSA-4999-659w-mq36
Issue TrackingThird Party Advisory