Is CVE-2026-113466 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-113466 being exploited in the wild.

How severe is CVE-2026-113466?

Medium severity, with a CVSS score of 5.3, published 20 October 2026.

Which products and versions are affected?

Minio up to RELEASE.2025-10-15T17-29-55Z.

Is there a fix for CVE-2026-113466?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-113466 attacked?

It is attacked over the network.

Am I affected by CVE-2026-113466?

Check whether you run Minio at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-113466: MinIO Embedded Console hard-coded cryptographic key authentication bypass

CVE-2026-113466 · Severity: medium · CVSS 5.3 · Published 2026-10-20

MinIO is an object storage server used to store and retrieve data at scale. A vulnerability in its embedded web console allows an unauthenticated attacker to forge admin session cookies and gain complete control of the storage system without providing valid credentials. An attacker can retrieve sensitive data, modify or delete files, or disrupt service availability.

Technologies: Minio. Vendors: MinIO.

Quick answers

Is CVE-2026-113466 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-113466 being exploited in the wild.
How severe is CVE-2026-113466?: Medium severity, with a CVSS score of 5.3, published 20 October 2026.
Which products and versions are affected?: Minio up to RELEASE.2025-10-15T17-29-55Z.
Is there a fix for CVE-2026-113466?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-113466 attacked?: It is attacked over the network.
Am I affected by CVE-2026-113466?: Check whether you run Minio at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The vulnerability stems from use of a hard-coded cryptographic key in the SessionTokenAuthenticate function within cmd/common-main.go of the Embedded Console component. A deploymentID can be leaked through S3 Select error messages, enabling an attacker to derive the session signing key deterministically and forge authenticated console cookies. This is a remote network attack requiring no authentication or user interaction.

Affected products

MinIO MinIO up to RELEASE.2025-10-15T17-29-55Z

Timeline

2026-10-20: disclosed: Vulnerability publicly disclosed
2026-10-20: advisory

References

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