CVE-2026-55188

RustFS is a distributed object storage system built in Rust. From 1.0.0-alpha.1 until 1.0.0-beta.9, RustFS contains an authorization bypass in the bucket replication admin API. The ListRemoteTargetHandler handler for listing remote replication targets only checks whether request credentials exist, but does not verify that the caller has replication or administrator permissions. As a result, an authenticated user with no effective bucket or admin permissions can list remote replication target configuration for a bucket. Because the returned BucketTarget objects include remote target credentials, this can disclose replication access keys and secret keys. This vulnerability is fixed in 1.0.0-beta.9.

CVSS v3 8.2 HIGH

8.2^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.8

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://github.com/rustfs/rustfs/security/advisories/GHSA-796f-j7xp-hwf4
https://github.com/rustfs/rustfs/security/advisories/GHSA-796f-j7xp-hwf4

Configurations

No configuration.

History

27 Jun 2026, 04:17

Type	Values Removed	Values Added
References	~~() https://github.com/rustfs/rustfs/security/advisories/GHSA-796f-j7xp-hwf4 -~~	() https://github.com/rustfs/rustfs/security/advisories/GHSA-796f-j7xp-hwf4 -

26 Jun 2026, 20:20

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-06-26 20:17

Updated : 2026-06-27 04:17

NVD link : CVE-2026-55188

Mitre link : CVE-2026-55188

CVE.ORG link : CVE-2026-55188

JSON object : View

Products Affected

No product.

CWE

CWE-200

Exposure of Sensitive Information to an Unauthorized Actor

CWE-522

Insufficiently Protected Credentials

CWE-862

Missing Authorization

CWE-863

Incorrect Authorization

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