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.
CVE-2026-54582
MEDIUMPre-NVD 6.06.0—Trending — 3 sources updated this week
EchelonGraph scoreMEDIUM confidence
This medium-severity CVE scores 6.0 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.5%, top 56% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
Triggered by: NVD CVSS baseline
Sources: epss, secondary
6.0EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
- Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 6.0Exploit: None knownExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 6.0
- EG Score
- 6.0(medium)
- EG Risk
- 27(Track)EG Risk 27/100SSVC: Track
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity60% × 45%Exploitation1% × 40%Automatability0% × 15%Action: Routine — remediate on your standard cadence. - EPSS PROB
- 1%
- EPSS %ILE
- 44%
- KEV
- Not listed
Published
September 17, 2026
Last Modified
September 17, 2026
Advisory Details (4)
Auto-updated Sep 17, 2026Patch available. Sources: github_commit, github_release, github, github_pr.
github_release Patch Available
mport 2.7.8
Patch available: MidnightBSD/mport 2.7.8
https://github.com/MidnightBSD/mport/releases/tag/2.7.8github_commit Patch Available
commit c643312d149d (MidnightBSD/mport)
Patch available: MidnightBSD/mport 2.7.8 (contains commit c643312d149d)
https://github.com/MidnightBSD/mport/commit/c643312d149dcc994957dbafa8f6f6b61e945e39github_pr Patch Available
Detect file conflicts before package installation
Patch available: MidnightBSD/mport 2.7.8 (PR #131 merged 2026-05-15)
https://github.com/MidnightBSD/mport/pull/131github Patch Available
mport package installation can overwrite existing unmanaged or differently owned files · Advisory · MidnightBSD/mport · GitHub
Affected: 2.7.8
https://github.com/MidnightBSD/mport/security/advisories/GHSA-5773-7r4r-rpgxWeakness Classification(2)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 8× in last 7d / 8× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-09-19 19:33 UTCEG score recompute
- 2026-09-18 20:37 UTCEG score recompute
- 2026-09-18 19:28 UTCEPSS rescore
- 2026-09-17 20:18 UTCEG score recompute
- 2026-09-17 19:20 UTCEG score recompute
- 2026-09-17 17:35 UTCEG score recompute
- 2026-09-17 17:00 UTCEG score recompute
- 2026-09-17 16:59 UTCMITRE cvelistV5first tracked
Related CVEs(same CWE)
Same CWE
10 shownCWE-668 · CWE-73
- CVE-2012-1846EG 10.0EPSS p91HIGH
- CVE-2014-125059NVD 5.0EG 9.8CRITICAL
- CVE-2014-125044NVD 6.3EG 9.8CRITICAL
- CVE-2019-10781EG 9.8CRITICAL
- CVE-2008-7291EG 9.8CRITICAL
- CVE-2018-7846EG 9.8EPSS p98CRITICAL
- CVE-2018-18068EG 9.8CRITICAL
- CVE-2018-17246EG 9.8EPSS p100CRITICAL
- CVE-2018-7072EG 9.8CRITICAL
- CVE-2017-18129EG 9.8CRITICAL
Frequently asked(5)
What is CVE-2026-54582?
CVE-2026-54582 is a medium vulnerability published on September 17, 2026. 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/checkpreconditions.c, libmport/installprimative.c, and libmport/mportprivate.h did not apply…
When was CVE-2026-54582 disclosed?
CVE-2026-54582 was first published in the National Vulnerability Database on September 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-54582 actively exploited?
CVE-2026-54582 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 56.2% of all scored CVEs.
What is the CVSS score of CVE-2026-54582?
CVE-2026-54582 has a CVSS v3 base score of 6.0 (NVD).
How do I remediate CVE-2026-54582?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-54582, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2026-54582
Is Your Infrastructure Affected by CVE-2026-54582?
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