CVE-2026-54582

mport package installation can overwrite existing unmanaged or differently owned files

Published: Sep 17, 2026Updated: Sep 17, 2026 Sources: CVE List NVDCWE-73

N/ACVSS

NVD MITRE

Description

mport is the MidnightBSD Package Manager. Prior to 2.7.8, package installation lacked a preflight check for incoming non-directory assets that already existed on disk. The affected logic across libmport/check_preconditions.c, libmport/install_primative.c, and libmport/mport_private.h did not apply MPORT_PRECHECK_FILE_CONFLICTS, so a crafted or conflicting package could overwrite a file owned by another package or unmanaged by mport. The check is bypassed only when the operator explicitly enables mport->force. Privileged installation without that override could compromise local filesystem integrity and package database consistency. This issue is fixed in version 2.7.8.

No summary for this CVE yet.

Weaknesses

CWE-73 CWE-668

Affected Products

MidnightBSD

oss-project

mportOn-prem

Operating Systems / unix-bsd

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

References

https://github.com/MidnightBSD/mport/security/advisories/GHSA-5773-7r4r-rpgx

github.com

https://github.com/MidnightBSD/mport/pull/131

github.com

https://github.com/MidnightBSD/mport/commit/c643312d149dcc994957dbafa8f6f6b61e945e39

github.com

and 1 more references View all →

Unlock Complete Vulnerability Intelligence

Get the full picture for CVE-2026-54582 and every CVE in our database. Create a free account — no credit card required.

Create Free Account

Plain-language analysis

Impact assessment and exploitation scenario in plain English

Attack graph visualization

Interactive attack path and kill chain mapping

Exploit details & PoC links

ExploitDB, Metasploit, GitHub PoCs with direct links

Nuclei scanner templates

Ready-to-use vulnerability scanner templates

Full remediation guide

Patch instructions, workarounds, and compliance impact

Interactive AI chat

Ask questions about this vulnerability in natural language

Related vulnerabilities

Semantically similar CVEs and attack patterns

REST API & MCP access

Integrate vulnerability data into your workflows