mport sample file handling can write outside the configured root
Priority LOW 28CWE-22Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Passive
- Attack complexity
- Low
- Attack requirements
- Present
- Impact type
- —
- Confidentiality · integrity · availability
- None · High · Low
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA.
Summary
mport is the MidnightBSD Package Manager. Prior to 2.7.8, create_sample_file() in libmport/bundle_read_install_pkg.c did not constrain absolute source and destination paths from the sample-file manifest directive to mport->root. A malicious or malformed package manifest could therefore direct privileged sample-file handling to copy or write outside the configured installation root, compromising local filesystem integrity. This issue is fixed in version 2.7.8.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00544 45th percentileScored 2026-11-07
Fix Fixed mport (MidnightBSD): 2.7.8
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| MidnightBSD | mport | before 2.7.8 | 2.7.8 | Patch available | CNA |
- mport VendorMidnightBSD Affected before 2.7.8 Fixed in 2.7.8 Patch available CNA
Remediation
- Fix · CNA mport (MidnightBSD) Fixed in 2.7.8
Timeline
- 2026-10-02 Threatist record created from CVE-2026-54585
References
More MidnightBSD vulnerabilities
- TI-2008-04392 The TCP implementation in (1) Linux, (2) platforms based on BSD Unix, (3) Microsoft… CVSS 2.0HIGH 7.1
- TI-2009-00656 The pf_test_rule function in OpenBSD Packet Filter (PF), as used in OpenBSD 4.2 through… CVSS 2.0HIGH 7.8
- TI-2026-39418 mport package bundle downloads allow unsafe destination filenames CVSS 4.0HIGH 8.3
- TI-2026-39415 mport index decompression can leave partial or corrupt index data after zstd failures CVSS 4.0HIGH 8.3
- TI-2026-39416 mport bootstrap index fetch can continue after hash verification failure CVSS 4.0HIGH 8.3
- TI-2026-39421 mport permits repository and package mirror fetches over insecure transport CVSS 4.0MEDIUM 6.0
Sources
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences