Vulnerability Description
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.
Related Weaknesses (CWE)
References
- https://github.com/rustfs/rustfs/security/advisories/GHSA-wfxj-ph3v-7mjf
- https://github.com/rustfs/rustfs/security/advisories/GHSA-wfxj-ph3v-7mjf
FAQ
What is CVE-2026-45042?
CVE-2026-45042 is a documented vulnerability. 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 desti...
How severe is CVE-2026-45042?
CVSS scoring is not yet available for CVE-2026-45042. Check NVD for updates.
Is there a patch for CVE-2026-45042?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.