CVE-2026-54584— mport trusts environment-controlled temporary directories in privileged metadata extraction
Quick assessment
Affected
MidnightBSD mport
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
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 redire
Affected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| MidnightBSD | mport | < 2.7.8 |
affected |
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I. Basic Information for CVE-2026-54584
Vulnerability Information
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Vulnerability Title
mport trusts environment-controlled temporary directories in privileged metadata extraction
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
文件名或路径的外部可控制
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| MidnightBSD | mport | < 2.7.8 | - |
|
II. Public POCs for CVE-2026-54584
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2026-54584 (2)
Vendor Pages for CVE-2026-54584 (1)
-
🔗 Release mport 2.7.8 · MidnightBSD/mport · GitHub x_refsource_MISC
Other References for CVE-2026-54584 (1)
IV. Related Vulnerabilities
Same product: mport
-
CVE-2026-54579
mport mirror-selection ping accepts insufficiently validated -
CVE-2026-54576
mport package installation has symlink TOCTOU in chown and c -
CVE-2026-54587
mport directory asset installation is vulnerable to symlink -
CVE-2026-54575
mport package fetch and clean paths are vulnerable to TOCTOU -
CVE-2026-54578
mport verify can compare stale checksum data after hashing f
Same vendor: MidnightBSD
-
CVE-2026-54579
mport mirror-selection ping accepts insufficiently validated -
CVE-2026-54576
mport package installation has symlink TOCTOU in chown and c -
CVE-2026-54587
mport directory asset installation is vulnerable to symlink -
CVE-2026-54575
mport package fetch and clean paths are vulnerable to TOCTOU -
CVE-2026-54578
mport verify can compare stale checksum data after hashing f
Same weakness: CWE-73
V. Comments for CVE-2026-54584
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