Cloudanix VulnDB

CVE-2026-73285

High · 7.5

CVSS

7.5

EPSS

0.5%

Published

Aug 12, 2026

CISA due date

—

The record

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_tag incorrectly for PreparedIamMode::Opa, causing maybe_merge_object_tag_conditions to omit s3:ExistingObjectTag/* values and allowing authenticated users to bypass tag-based policy restrictions. This issue is fixed in version 1.0.0-rc.1.

Affected packages

Ecosystem Package Introduced Fixed

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