CVE-2026-54582 Details
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.
A vulnerability in the MidnightBSD package manager, mport, prior to version 2.7.8, allowed package installations to overwrite existing non-directory files on the disk. This issue arose because the installation process did not check for file conflicts with assets already present, whether those files were managed by another package or untracked by mport. The lack of a preflight check meant that a crafted or conflicting package could inadvertently replace important files, potentially disrupting the package database and the overall integrity of the filesystem. The vulnerability could be exploited during a privileged installation, unless the operator manually bypassed the conflict check with a force option.
Users can upgrade to mport version 2.7.8 or later to address this vulnerability.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Sep 17, 2026CISA-ADP
Assessed Sep 17, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/MidnightBSD/mport/commit/c643312d149dcc994957dbafa8f6f6b61e945e39 | [email protected] | Source CodeVendor |
| https://github.com/MidnightBSD/mport/pull/131 | [email protected] | Issue TrackingSource CodeVendor |
| https://github.com/MidnightBSD/mport/releases/tag/2.7.8 | [email protected] | Release NotesVendor |
| https://github.com/MidnightBSD/mport/security/advisories/GHSA-5773-7r4r-rpgx | [email protected] | AdvisoryRemedyVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-668 | Exposure of Resource to Wrong Sphere | [email protected] |
| CWE-73 | External Control of File Name or Path | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| MidnightBSD mport | < 2.7.8 (semver) |
CPE
Remediation
| |
Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Sep 17, 2026 | CVE Modified | CISA-ADP |
| Sep 17, 2026 | New CVE Received | [email protected] |