EUVD-2026-82321Severity by source
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Primary rating from Vendor (GitHub_M) · only source for this CVE.
CVSS VectorVendor: GitHub_M
Lifecycle Timeline
2DescriptionCVE.org
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.
AnalysisAI
Package file overwrite in MidnightBSD mport prior to 2.7.8 allows a crafted package installed with privileges to replace existing files on disk that are owned by another package or unmanaged by mport, compromising local filesystem integrity and package database consistency. The flaw requires user interaction (UI:P) and specific attack requirements (AT:P), and is unauthenticated according to the CVSS vector (PR:N). …
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Vulnerability AssessmentAI
| Risk Assessment | This is a genuine but sharply gated integrity flaw, not a high-urgency remote threat. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Remediation | Upgrade to MidnightBSD mport 2.7.8 or later; the vendor-released patch is available at https://github.com/MidnightBSD/mport/releases/tag/2.7.8 and via commit c643312d149dcc994957dbafa8f6f6b61e945e39. … Detailed patch versions, workarounds, and compensating controls in full report. |
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External POC / Exploit Code
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