VDB
CVE-2026-15788
CVE-2026-15788
PUBLISHED
CVSS 5.6 MEDIUM
Reported by Docker · Published July 20, 2026
BuildKit's cache mount source= selector on Windows Container on Windows (WCOW) workers does not detect NTFS directory junctions placed inside the cache root. A build authored by an untrusted user on a WCOW-configured BuildKit daemon can read arbitrary host files reachable to the BuildKit daemon process.
Risk Scores
CVSS 4.0
5.6
CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| moby | BuildKit | 0 |
| moby | BuildKit | 0 |
| alpine | buildkit | 0 |
Timeline
- Jul 20, 2026 Coalition ESS Score
- Jul 20, 2026 CVE Published
- Jul 21, 2026 CVE Updated
- Aug 7, 2026 EPSS Score
- Aug 24, 2026 EPSS Score
- Aug 26, 2026 Security Advisory
- Aug 28, 2026 EPSS Score
- Sep 5, 2026 EPSS Score
- Sep 9, 2026 EPSS Score
- Sep 12, 2026 EPSS Score
- Sep 16, 2026 EPSS Score
- Sep 18, 2026 EPSS Score