CVE-2026-54578

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.

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Weakness Type (CWE)

CWE-354 CWE-354

CWE-755 CWE-755

References

Other References

https://github.com/MidnightBSD/mport/commit/cd9991c3cc1f60ecb3f378852ad8b5caa820e990 https://github.com/MidnightBSD/mport/pull/138 https://github.com/MidnightBSD/mport/releases/tag/2.7.8 https://github.com/MidnightBSD/mport/security/advisories/GHSA-hgmr-9p75-q5cg

Frequently Asked Questions

What is CVE-2026-54578? +

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.

How do I check if I'm vulnerable to CVE-2026-54578? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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