CVE-2026-54584: medium-severity vulnerability in MidnightBSD mport
mport trusts environment-controlled temporary directories in privileged metadata extraction
Published · Updated
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13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 5.3epss 0.5%
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.
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
Affected products
MidnightBSD · mportRelated CVEs — MidnightBSD mport
In the same product, most dangerous first.
CVE-2026-54582MEDIUMmport package installation can overwrite existing unmanaged or differently owned filesEPSS 0.6%CVE-2026-54585MEDIUMmport sample file handling can write outside the configured rootEPSS 0.5%CVE-2026-54583HIGHmport package bundle downloads allow unsafe destination filenamesEPSS 0.5%CVE-2026-54580HIGHmport index decompression can leave partial or corrupt index data after zstd failuresEPSS 0.3%CVE-2026-54581HIGHmport bootstrap index fetch can continue after hash verification failureEPSS 0.2%CVE-2026-54577LOWmport audit can inspect the wrong package when options are presentEPSS 0.2%