What’s Vulnerable › Vulnerabilities

CVE-2024-36107: Information disclosure in minio

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-05-28 · updated 2026-06-17
• Weakness: CWE-200

Description

MinIO is a High Performance Object Storage released under GNU Affero General Public License v3.0. `If-Modified-Since` and `If-Unmodified-Since` headers when used with anonymous requests by sending a random object name requests can be used to determine if an object exists or not on the server on a specific bucket and also gain access to some amount of information such as `Last-Modified (of the latest version)`, `Etag (of the latest version)`, `x-amz-version-id (of the latest version)`, `Expires (metadata value of the latest version)`, `Cache-Control (metadata value of the latest version)`. This conditional check was being honored before validating if the anonymous access is indeed allowed on the metadata of an object. This issue has been addressed in commit `e0fe7cc3917`. Users must upgrade to RELEASE.2024-05-27T19-17-46Z for the fix. There are no known workarounds for this issue.

Affected products

• minio: before RELEASE.2024-05-27T19-17-46Z — fixed in RELEASE.2024-05-27T19-17-46Z

How to fix

Upgrade to a fixed version: minio RELEASE.2024-05-27T19-17-46Z. Check the vendor advisory for mitigations.

References

• https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/If-Modified-Since
• https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/If-Unmodified-Since
• https://github.com/minio/minio/commit/e0fe7cc391724fc5baa85b45508f425020fe4272
• https://github.com/minio/minio/pull/19810
• https://github.com/minio/minio/security/advisories/GHSA-95fr-cm4m-q5p9
• https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/If-Modified-Since
• https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/If-Unmodified-Since
• https://github.com/minio/minio/commit/e0fe7cc391724fc5baa85b45508f425020fe4272
• https://github.com/minio/minio/pull/19810
• https://github.com/minio/minio/security/advisories/GHSA-95fr-cm4m-q5p9

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