CVE-2026-54586 Details
Description
mport is the MidnightBSD Package Manager. Prior to 2.7.8, the mport_fetch_index(), mport_fetch_bootstrap_index(), and mport_fetch_bundle() paths in libmport/fetch.c accepted non-HTTPS repository and package mirror URLs without a url_is_https() enforcement check. When a cleartext URL was configured or returned by mirror data, a network-positioned attacker could tamper with package index or package download traffic and compromise package selection or integrity. This issue is fixed in version 2.7.8.
A vulnerability exists in the MidnightBSD package manager, mport, in versions prior to 2.7.8. The issue arises because the package manager accepted non-HTTPS repository and package mirror URLs for index and package downloads without enforcing a requirement for secure URLs. This lack of validation allowed a network attacker to intercept and manipulate package index or download traffic, potentially compromising the integrity of the packages being fetched. The vulnerability was addressed in version 2.7.8 by implementing a check to ensure that only HTTPS URLs are used for repository and package mirror fetches.
Users can upgrade to MidnightBSD 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 21, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/MidnightBSD/mport/commit/9b4d0f9192b243ee32266afa36dce430b257b921 | [email protected] | Source CodeVendor |
| https://github.com/MidnightBSD/mport/pull/121 | [email protected] | Issue TrackingVendor |
| https://github.com/MidnightBSD/mport/releases/tag/2.7.8 | [email protected] | Release NotesVendor |
| https://github.com/MidnightBSD/mport/security/advisories/GHSA-v5pv-7gxw-74r5 | [email protected] | AdvisoryRemedyVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-319 | Cleartext Transmission of Sensitive Information | [email protected] |
| CWE-345 | Insufficient Verification of Data Authenticity | [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 21, 2026 | CVE Modified | CISA-ADP |
| Sep 17, 2026 | New CVE Received | [email protected] |