CVE-2026-15788
Public on 2026-07-20
Modified on 2026-08-08
Description
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.
CVSS v3 Base Score
See breakdown
Affected Packages
| Platform | Package | Release Date | Advisory | Status |
|---|---|---|---|---|
| Amazon Linux 2 - Docker Extra | docker | Not Affected | ||
| Amazon Linux 2023 | docker | Not Affected | ||
| Amazon Linux 2 - Core | nerdctl | Not Affected | ||
| Amazon Linux 2023 | nerdctl | Not Affected | ||
| Amazon Linux 2 - Docker Extra | runfinch-finch | Not Affected | ||
| Amazon Linux 2023 | runfinch-finch | Not Affected |
CVSS Scores
| Score Type | Score | Vector | |
|---|---|---|---|
| Amazon Linux | CVSSv3 | 7.1 | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N |
| NVD | CVSSv3 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |