CVE-2026-15788

HighCVSS 7.5/10Last modified Oct 24, 2026

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.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Weakness enumeration

CWE-59

Affected software

No affected versions have been published.

Timeline

Published: Jul 20, 2026
Last modified: Oct 24, 2026
NVD status: Analyzed

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