CVE-2026-45042

RustFS is a distributed object storage system built in Rust. Prior to 1.0.0-beta.2, improper authorization in the UploadPartCopy operation allows copying objects across buckets without enforcing destination bucket restrictions on allowed copy sources. The implementation validates GetObject permission on the source bucket and PutObject on the destination bucket independently, but does not enforce any policy constraints on whether the destination bucket permits the specified copy source. This enables unauthorized cross-bucket data movement. This vulnerability is fixed in 1.0.0-beta.2.

CVSS

No CVSS.

References

Link	Resource
https://github.com/rustfs/rustfs/security/advisories/GHSA-wfxj-ph3v-7mjf
https://github.com/rustfs/rustfs/security/advisories/GHSA-wfxj-ph3v-7mjf

Configurations

No configuration.

History

28 May 2026, 20:16

Type	Values Removed	Values Added
References	~~() https://github.com/rustfs/rustfs/security/advisories/GHSA-wfxj-ph3v-7mjf -~~	() https://github.com/rustfs/rustfs/security/advisories/GHSA-wfxj-ph3v-7mjf -

28 May 2026, 19:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-05-28 19:16

Updated : 2026-05-29 15:11

NVD link : CVE-2026-45042

Mitre link : CVE-2026-45042

CVE.ORG link : CVE-2026-45042

JSON object : View

Products Affected

No product.

CWE

CWE-863

Incorrect Authorization

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