CVE-2026-54586

mport permits repository and package mirror fetches over insecure transport

MEDIUM
6
CVSS Score
Published: September 17, 2026 at 04:53 PM UTC
Updated: September 21, 2026 at 09:17 PM UTC
1 product affected across 1 vendorMport

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Severity
MEDIUM6
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 2.7.8
Affected range stops below 2.7.8, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6MEDIUMGitHub_M
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-319CWE-345

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