CVE-2026-73285

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Source
https://cve.org/CVERecord?id=CVE-2026-73285
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-73285.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-73285
Aliases
  • GHSA-5w8r-p896-6vq2
Published
2026-08-12T14:37:42Z
Modified
2026-09-11T03:48:37Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
RustFS: OPA policy plugin omits ExistingObjectTag conditions, allowing tag-based authorization policies to treat tagged objects as untagged
Details

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.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-863"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/73xxx/CVE-2026-73285.json"
}
References

Affected packages

Git / github.com/rustfs/rustfs

Affected ranges

Type
GIT
Repo
https://github.com/rustfs/rustfs
Events
Introduced
7f24dbda198f4a9c6d73728dcb07710fb1b14c12
Fixed
98d3619613722308498494d412797a52ea8ae64d
Fixed
778f1dfa2155cbbc61ad54e6896de9e29d2c4d8d
Database specific
Show details 
{
    "extracted_events": [
        {
            "introduced": "1.0.0-alpha.64"
        },
        {
            "fixed": "1.0.0-rc.1"
        }
    ],
    "source": [
        "AFFECTED_FIELD",
        "REFERENCES"
    ]
}

Affected versions

1.*
1.0.0-alpha.64
1.0.0-alpha.65
1.0.0-alpha.66
1.0.0-alpha.67
1.0.0-alpha.68
1.0.0-alpha.69
1.0.0-alpha.70
1.0.0-alpha.71
1.0.0-alpha.72
1.0.0-alpha.73
1.0.0-alpha.74
1.0.0-alpha.75
1.0.0-alpha.76
1.0.0-alpha.77
1.0.0-alpha.78
1.0.0-alpha.79
1.0.0-alpha.80
1.0.0-alpha.81
1.0.0-alpha.82
1.0.0-alpha.83
1.0.0-alpha.84
1.0.0-alpha.85
1.0.0-alpha.86
1.0.0-alpha.87
1.0.0-alpha.88
1.0.0-alpha.89
1.0.0-alpha.90
1.0.0-alpha.91
1.0.0-alpha.92
1.0.0-alpha.93
1.0.0-alpha.94
1.0.0-alpha.95
1.0.0-alpha.96
1.0.0-alpha.97
1.0.0-alpha.98
1.0.0-alpha.99
1.0.0-beta.1
1.0.0-beta.10
1.0.0-beta.10-preview.1
1.0.0-beta.10-preview.2
1.0.0-beta.10-preview.3
1.0.0-beta.10-preview.4
1.0.0-beta.10-preview.5
1.0.0-beta.11
1.0.0-beta.11-preview.1
1.0.0-beta.12
1.0.0-beta.12-preview.1
1.0.0-beta.2
1.0.0-beta.3
1.0.0-beta.4
1.0.0-beta.5
1.0.0-beta.6
1.0.0-beta.7
1.0.0-beta.8
1.0.0-beta.9
v1.*
v1.0.0-beta.1

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-73285.json"