Low 2.0Published Sep 17, 2026

CVE-2026-54578mport verify can compare stale checksum data after hashing failures

Updated under an hour ago (2026-10-19 06:50 UTC)

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It affects MidnightBSD mport. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for MidnightBSD mport

Exploited in the last 30 days

mport is the MidnightBSD Package Manager. Prior to 2.7.8, mport_verify_package() in libmport/verify.c could continue after MD5File() or SHA256_File() failed and compare an expected checksum with stale data in the hash buffer rather than a newly computed digest. An attacker able to influence an installed file or the conditions that make hashing fail could receive a misleading integrity result or hide a checksum failure. This issue is fixed in version 2.7.8.

CVSS: 2.0 LOW (v4.0, CNA)CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
Weakness (CWE): CWE-354, CWE-755
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Deferred
Record last updated: Sep 18, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

MidnightBSD mport midnightbsd:mport (from the name)	before 2.7.8	CNA record

References

https://github.com/MidnightBSD/mport/security/advisories/GHSA-hgmr-9p75-q5cgx-refsource-confirm
https://github.com/MidnightBSD/mport/pull/138x-refsource-misc
https://github.com/MidnightBSD/mport/commit/cd9991c3cc1f60ecb3f378852ad8b5caa820e990x-refsource-misc
https://github.com/MidnightBSD/mport/releases/tag/2.7.8x-refsource-misc

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.