Auth bypass in Rustfs

CVE-2026-73285

RustFS is a distributed object storage system built in Rust. From 1.0.0-alpha.64 until 1.0.0-rc.1, RustFS external OPA authorization enabled by RUSTFS_POLICY_PLUGIN_URL in crates/iam/src/sys.rs sets PreparedIamAuth.needs_existing_object_ta…

Vulnerability class: Broken Access Control

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

  • Rustfs — versions >= 1.0.0-alpha.64, < 1.0.0-rc.1

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-73285?
CVE-2026-73285 is a high-severity vulnerability in Rustfs, classified under Incorrect Authorization. CVSS score: 7.5/10. Published 2026-08-12.
How severe is CVE-2026-73285?
High severity. CVSS v3 base score is 7.5 out of 10.