---
id: CVE-2026-54579
title: mport is the MidnightBSD Package Manager
summary: >-
  mport is the MidnightBSD Package Manager. Prior to 2.7.8, ping() in
  libmport/ping.c accepted ICMP replies without validating icmp_id or icmp_seq
  and parsed the reply using a fixed IP-header offset instead of ip_hl. A
  network attacker abl…
severity: low
cvss: 2.3
cvssVector: 'CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N'
cwe:
  - CWE-125
  - CWE-345
vendor: MidnightBSD
product: mport
affected:
  - mport < 2.7.8
published: '2026-09-17'
updated: '2026-09-17'
sourceUpdated: '2026-09-17T21:15:06.427'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-54579'
references:
  - url: >-
      https://github.com/MidnightBSD/mport/security/advisories/GHSA-qc2f-2j7j-m3r7
    label: security-advisories@github.com
tags:
  - nvd
  - cve.org
cvssSource: cna
ingestedAt: '2026-09-17T17:23:30.628Z'
epss: 0.00139
epssPercentile: 0.03633
---

## Overview

mport is the MidnightBSD Package Manager. Prior to 2.7.8, ping() in libmport/ping.c accepted ICMP replies without validating icmp_id or icmp_seq and parsed the reply using a fixed IP-header offset instead of ip_hl. A network attacker able to inject or spoof visible ICMP replies could influence mirror latency selection, while a malformed packet carrying IP options could shift the ICMP header and trigger an out-of-bounds read. This issue is fixed in version 2.7.8.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.