CVE-2026-54586CWE-319CWE-345

CVE-2026-54586

published September 17, 2026

CVSS
6.0
EPSS
0%
Percentile
4.2
In the wild
Unconfirmed
What it is

mport is the MidnightBSD Package Manager. Prior to 2.7.8, the mport_fetch_index(), mport_fetch_bootstrap_index(), and mport_fetch_bundle() paths in libmport/fetch.c accepted non-HTTPS repository and package mirror URLs without a url_is_https() enforcement check. When a cleartext URL was configured or returned by mirror data, a network-positioned attacker could tamper with package index or package download traffic and compromise package selection or integrity. This issue is fixed in version 2.7.8.

The record
Technical detail
CVSS
6.0 · NONE
CVSS v4.0
6.0 · CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N
EPSS
0.00154 · 4.2th percentile
Weaknesses
CWE-319 · Cleartext Transmission of Sensitive Information; CWE-345 · Insufficient Verification of Data Authenticity
Published
2026-09-17T21:16Z
References (4)
EPSS history
Timeline
  • 19 SEP 03:53Z
    EPSS moved — → 0%
    epss
  • 17 SEP 16:53Z
    mport permits repository and package mirror fetches over insecure transport
    cvelistv5