CVE-2026-54578

mport verify can compare stale checksum data after hashing failures

State: Published
Severity: 2.0 Low
Published: Sep 17, 2026
Updated: Sep 18, 2026
Reserved: Jun 15, 2026

Description

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.

Scores

CVSS	Score	Vector	Source
4.0	2.0 Low	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	GitHub_M

Weaknesses

CWE-354 Improper Validation of Integrity Check Value
CWE-755 Improper Handling of Exceptional Conditions

Affected Products

Product	Versions
mportMidnightBSD	< 2.7.8Affected

References

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