CVE-2026-22043

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Source
https://cve.org/CVERecord?id=CVE-2026-22043
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-22043.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-22043
Aliases
Published
2026-01-08T15:03:59Z
Modified
2026-10-21T02:56:21Z
Severity
  • 5.7 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:P CVSS Calculator
Summary
RustFS has IAM deny_only Short-Circuit that Allows Privilege Escalation via Service Account Minting
Details

RustFS is a distributed object storage system built in Rust. In versions 1.0.0-alpha.13 through 1.0.0-alpha.78, a flawed deny_only short-circuit in RustFS IAM allows a restricted service account or STS credential to self-issue an unrestricted service account, inheriting the parent’s full privileges. This enables privilege escalation and bypass of session/inline policy restrictions. Version 1.0.0-alpha.79 fixes the issue.

Database specific 
{
    "cna_assigner":  "GitHub_M",
    "cwe_ids":  [
        "CWE-269",
        "CWE-284"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/22xxx/CVE-2026-22043.json"
}
References

Affected packages

Git / github.com/rustfs/rustfs

Affected ranges

Type
GIT
Repo
https://github.com/rustfs/rustfs
Events
Introduced
b97845fffdae24affedc2e95153da7bf75049a95
Fixed
a95e549430851f3c34ee4cc8dd7be60aa200e8c4
Database specific
Show details 
{
    "extracted_events":  [
        {
            "range":  [
                {
                    "introduced":  "1.0.0-alpha.13"
                },
                {
                    "fixed":  "1.0.0-alpha.79"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StringRangeExpression"
        },
        {
            "range":  [
                {
                    "introduced":  "1.0.0-alpha.13"
                },
                {
                    "last_affected":  "1.0.0-alpha.78"
                }
            ],
            "source":  "DESCRIPTION"
        }
    ]
}

Affected versions

1.*
1.0.0-alpha.13
1.0.0-alpha.14
1.0.0-alpha.15
1.0.0-alpha.16
1.0.0-alpha.17
1.0.0-alpha.18
1.0.0-alpha.19
1.0.0-alpha.20
1.0.0-alpha.21
1.0.0-alpha.22
1.0.0-alpha.23
1.0.0-alpha.24
1.0.0-alpha.25
1.0.0-alpha.26
1.0.0-alpha.27
1.0.0-alpha.28
1.0.0-alpha.29
1.0.0-alpha.30
1.0.0-alpha.31
1.0.0-alpha.32
1.0.0-alpha.33
1.0.0-alpha.34
1.0.0-alpha.35
1.0.0-alpha.36
1.0.0-alpha.37
1.0.0-alpha.38
1.0.0-alpha.39
1.0.0-alpha.40
1.0.0-alpha.41
1.0.0-alpha.42
1.0.0-alpha.43
1.0.0-alpha.44
1.0.0-alpha.45
1.0.0-alpha.46
1.0.0-alpha.47
1.0.0-alpha.48
1.0.0-alpha.49
1.0.0-alpha.50
1.0.0-alpha.51
1.0.0-alpha.52
1.0.0-alpha.53
1.0.0-alpha.54
1.0.0-alpha.55
1.0.0-alpha.56
1.0.0-alpha.57
1.0.0-alpha.58
1.0.0-alpha.59
1.0.0-alpha.60
1.0.0-alpha.61
1.0.0-alpha.62
1.0.0-alpha.63
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

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-22043.json"