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CVE-2026-55188

HIGH Exploitation: PoC
8.2
CVSS 3.1
Description
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.

Metadata

CVE ID
CVE-2026-55188
State
PUBLISHED
Assigner
GitHub_M
Reserved
2026-06-16 15:20 UTC
Published
2026-06-26 20:03 UTC
Last updated
2026-06-27 03:11 UTC
Primary CWE
CWE-200
CWE-200: Exposure of Sensitive Information to an Unauthorize…
Vendor / Product
rustfs / rustfs
Sources
cve.org  ·  NVD

Severity & Metrics

8.2 HIGH CVSS 3.1
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N
SSVC — CISA Coordinator
Exploitation
PoC
Automatable
no
Tech. Impact
total
Affected products (1)
VendorProductPlatformVersions
rustfs rustfs — >= 1.0.0-alpha.1, <= 1.0.0-beta.8
Weakness (CWE)
CWESourceDescription
CWE-200 cna CWE-200: Exposure of Sensitive Information to an Unauthorized Actor
CWE-522 cna CWE-522: Insufficiently Protected Credentials
CWE-862 cna CWE-862: Missing Authorization
CWE-863 cna CWE-863: Incorrect Authorization
CVSS scores (1)
ScoreSeverityVersionSourceVector
8.2 HIGH 3.1 cna CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N
References (1)
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