Disclosure summary
BuildKit: Malicious client can bypass destination directory validation on local sources upload
Source-reported weakness categories
CWE-22
Source-specific records & product guidance
Sources retain their own attribution and scoring. Follow the original record to confirm affected versions, fixed releases, and configuration conditions.
Microsoft Security Updates (CVRF) · 2026-Aug
Open original source · Updated Sep 09, 2026
BuildKit: Malicious client can bypass destination directory validation on local sources upload
Maximum of vendor-reported product scores; products and fixed builds are associations, not a universal affected-version statement.
| Vendor | Product / association | Version / bounds |
|---|---|---|
| Microsoft update guide | azl3 moby-engine 25.0.3-19 on Azure Linux 3.0 | (MSRC status code 3) |
| Microsoft update guide | azl3 moby-engine 25.0.3-20 on Azure Linux 3.0 | (MSRC status code 3) |
Vendor remediation references
- Vendor guidance · build 25.0.3-20 · product IDs 21691-17084, 21807-17084
- Vendor guidance · product IDs 21691-17084, 21807-17084
Original records & references
- NIST NVD record
- CVE Program record
- msrc.microsoft.com — Vendor advisory
PUBLISHED 2026-08-22T21:04:23-04:00
MODIFIED 2026-09-09T23:34:56-04:00
INGESTED 2026-10-08T12:40:11-04:00