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

2026-10-28T02:30:31Z

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

778f1dfa2155cbbc61ad54e6896de9e29d2c4d8d

Fixed

98d3619613722308498494d412797a52ea8ae64d

Database specific

Show details

{
    "extracted_events":  [
        {
            "range":  [
                {
                    "introduced":  "1.0.0-alpha.64"
                },
                {
                    "fixed":  "1.0.0-rc.1"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StringRangeExpression"
        },
        {
            "range":  [
                {
                    "fixed":  "98d3619613722308498494d412797a52ea8ae64d"
                }
            ],
            "source":  "REFERENCES_COMMIT"
        },
        {
            "original_tag":  "1.0.0-rc.1",
            "range":  [
                {
                    "fixed":  "778f1dfa2155cbbc61ad54e6896de9e29d2c4d8d"
                }
            ],
            "source":  "REFERENCES_TAG"
        }
    ]
}

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"