Vulnerability record · CVE-2021-21287 · published 1 February 2021
CVE-2021-21287: Minio server-side request forgery (ssrf) vulnerability
Minio · Minio
MinIO is a High Performance Object Storage released under Apache License v2.0. In MinIO before version RELEASE.2021-01-30T00-20-58Z there is a server-side request forgery vulnerability. The target application may have functionality for importing data from a URL, publishing data to a URL, or otherwise reading data from a URL that can be tampered with. The attacker modifies the calls to this functionality by supplying a completely different URL or by manipulating how URLs are built (path traversal etc.). In a Server-Side Request Forgery (SSRF) attack, the attacker can abuse functionality on the server to read or update internal resources. The attacker can supply or modify a URL which the code running on the server will read or submit data, and by carefully selecting the URLs, the attacker may be able to read server configuration such as AWS metadata, connect to internal services like HTTP enabled databases, or perform post requests towards internal services which are not intended to be exposed. This is fixed in version RELEASE.2021-01-30T00-20-58Z, all users are advised to upgrade. As a workaround you can disable the browser front-end with "MINIO_BROWSER=off" environment variable.
Description
MinIO is a High Performance Object Storage released under Apache License v2.0. In MinIO before version RELEASE.2021-01-30T00-20-58Z there is a server-side request forgery vulnerability. The target application may have functionality for importing data from a URL, publishing data to a URL, or otherwise reading data from a URL that can be tampered with. The attacker modifies the calls to this functionality by supplying a completely different URL or by manipulating how URLs are built (path traversal etc.). In a Server-Side Request Forgery (SSRF) attack, the attacker can abuse functionality on the server to read or update internal resources. The attacker can supply or modify a URL which the code running on the server will read or submit data, and by carefully selecting the URLs, the attacker may be able to read server configuration such as AWS metadata, connect to internal services like HTTP enabled databases, or perform post requests towards internal services which are not intended to be exposed. This is fixed in version RELEASE.2021-01-30T00-20-58Z, all users are advised to upgrade. As a workaround you can disable the browser front-end with "MINIO_BROWSER=off" environment variable.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Affected products
1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.
References
| Link | Tags |
|---|---|
| https://github.com/minio/minio/commit/eb6871ecd960d570f70698877209e6db181bf276 | PatchThird Party Advisory |
| https://github.com/minio/minio/pull/11337 | PatchThird Party Advisory |
| https://github.com/minio/minio/releases/tag/RELEASE.2021-01-30T00-20-58Z | Release NotesThird Party Advisory |
| https://github.com/minio/minio/security/advisories/GHSA-m4qq-5f7c-693q | Third Party Advisory |
| https://github.com/minio/minio/commit/eb6871ecd960d570f70698877209e6db181bf276 | PatchThird Party Advisory |
| https://github.com/minio/minio/pull/11337 | PatchThird Party Advisory |
| https://github.com/minio/minio/releases/tag/RELEASE.2021-01-30T00-20-58Z | Release NotesThird Party Advisory |
| https://github.com/minio/minio/security/advisories/GHSA-m4qq-5f7c-693q | Third Party Advisory |
Track CVE-2021-21287 inside VULONE
Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.
Related vulnerabilities
Same products first, then exploited flaws of the same weakness class.
Source: NIST National Vulnerability Database (record CVE-2021-21287), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.
