CVE-2026-54584

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Source
https://cve.org/CVERecord?id=CVE-2026-54584
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-54584.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-54584
Aliases
  • GHSA-4vv3-3h8r-q6mq
Published
2026-09-21T14:05:48Z
Modified
2026-09-25T08:27:30Z
Severity
  • 5.3 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N CVSS Calculator
Summary
mport trusts environment-controlled temporary directories in privileged metadata extraction
Details

mport is the MidnightBSD Package Manager. mport before 2.7.8 used TMPDIR while extracting package metafiles, including when running as root or in setuid/setgid contexts. An attacker able to control the environment for a privileged mport invocation could redirect temporary metadata extraction to an attacker-controlled location. PR 123 ignores unsafe TMPDIR values in privileged contexts and rejects empty TMPDIR. This issue has been patched in version 2.7.8.

Database specific 
{
    "cna_assigner":  "GitHub_M",
    "cwe_ids":  [
        "CWE-377",
        "CWE-73"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54584.json"
}
References

Affected packages

Git / github.com/midnightbsd/mport

Affected ranges

Type
GIT
Repo
https://github.com/midnightbsd/mport
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
899c8fe2d3ceb25d899e70dbd0c7744b7d7a0946
Fixed
3790fa49a36cb085f48b204ef189fb82bbee621a
Database specific
Show details 
{
    "extracted_events":  [
        {
            "introduced":  "0"
        },
        {
            "fixed":  "2.7.8"
        }
    ],
    "source":  [
        "DESCRIPTION",
        "REFERENCES"
    ]
}

Affected versions

2.*
2.0
2.0.1
2.0.2
2.0.5
2.0.6
2.0.7
2.0.8
2.0.9
2.1.0
2.1.1
2.1.2
2.1.3
2.1.4
2.1.5
2.1.6
2.1.7
2.1.8
2.1.9
2.2.0
2.2.1
2.2.2
2.2.3
2.2.4
2.2.5
2.2.6
2.2.7
2.2.8
2.2.9
2.2.9.1
2.3.0
2.4.0
2.4.1
2.4.3
2.4.4
2.4.5
2.4.6
2.4.7
2.4.8
2.5.0
2.5.1
2.6.0
2.6.1
2.6.2
2.6.3
2.6.4
2.6.5
2.6.7
2.6.8
2.7.0
2.7.1
2.7.2
2.7.3
2.7.4
2.7.5
2.7.6

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-54584.json"
vanir_signatures 
[
    {
        "deprecated":  false,
        "digest":  {
            "line_hashes":  [
                "119957359405669945120030440606740727674",
                "256165556245632309551915136949878708254",
                "74989649815960105708835506530771921140",
                "50614597987925468949691210108052772837",
                "235708484124317822188039213208353554795",
                "22259209027797341990053315092248903864",
                "198471845428013664164575852610006057056",
                "306880740727173123494435494042408803526",
                "115503530811073493255853405450937932669"
            ],
            "threshold":  0.9
        },
        "id":  "CVE-2026-54584-634324d3",
        "signature_type":  "Line",
        "signature_version":  "v1",
        "source":  "https://github.com/midnightbsd/mport/commit/3790fa49a36cb085f48b204ef189fb82bbee621a",
        "target":  {
            "file":  "libmport/bundle_read.c"
        }
    },
    {
        "deprecated":  false,
        "digest":  {
            "function_hash":  "338998570603308789551057811450505152398",
            "length":  909
        },
        "id":  "CVE-2026-54584-afe86c4f",
        "signature_type":  "Function",
        "signature_version":  "v1",
        "source":  "https://github.com/midnightbsd/mport/commit/3790fa49a36cb085f48b204ef189fb82bbee621a",
        "target":  {
            "file":  "libmport/bundle_read.c",
            "function":  "mport_bundle_read_extract_metafiles"
        }
    }
]
vanir_signatures_modified 
"2026-09-25T08:27:30Z"