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    CVE-2026-54580

    mport is the MidnightBSD Package Manager. Prior to 2.7.8, libmport/util.c did not make every truncated, corrupt, or failed zstd stream fatal in mport_decompress_zstd(), and libmport/fetch.c did not consistently propagate those failures to index-fetch callers. A malicious or faulty mirror could supply compressed package index data that caused ZSTD_decompressStream() or an output write to fail while leaving partial index output available for later use, resulting in package-index integrity loss or denial of service. This issue is fixed in version 2.7.8.

    Published:Sep 17, 2026
    Last Modified:Sep 24, 2026
    EPS:Sep 17, 2026
    EPSS Score:0.00261
    CVSS Score:8.3

    Affected Products

    Vendor
    Midnightbsd
    Product
    Mport

    Exploits

    No exploit reference

    Related CVEs

    CVE-2026-54584 (CVSS 5.3) — mport is the MidnightBSD Package Manager. mport before 2.7.8 used TMPDIR while extracting package metafiles, i…
    CVE-2026-54579 (CVSS 2.3) — mport is the MidnightBSD Package Manager. Prior to 2.7.8, ping() in libmport/ping.c accepted ICMP replies with…
    CVE-2026-54576 (CVSS 5.8) — mport is the MidnightBSD Package Manager. Prior to 2.7.8, do_actual_install() in libmport/bundle_read_install_…
    CVE-2026-54587 (CVSS 5.8) — mport is the MidnightBSD Package Manager. Prior to 2.7.8, directory assets handled as ASSET_DIR or ASSET_DIR_O…
    CVE-2026-54575 (CVSS 5.8) — mport is the MidnightBSD Package Manager. Prior to 2.7.8, privileged package fetch and cache-cleaning operatio…
    CVE-2026-54578 (CVSS 2) — mport is the MidnightBSD Package Manager. Prior to 2.7.8, mport_verify_package() in libmport/verify.c could co…
    CVE-2026-54586 (CVSS 6) — mport is the MidnightBSD Package Manager. Prior to 2.7.8, the mport_fetch_index(), mport_fetch_bootstrap_index…
    CVE-2026-54585 (CVSS 6) — mport is the MidnightBSD Package Manager. Prior to 2.7.8, create_sample_file() in libmport/bundle_read_install…
    CVE-2026-54582 (CVSS 6) — mport is the MidnightBSD Package Manager. Prior to 2.7.8, package installation lacked a preflight check for in…
    CVE-2026-54577 (CVSS 2) — mport is the MidnightBSD Package Manager. Prior to 2.7.8, the audit command in mport/mport.c computed option-a…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High