BuildKit is a toolkit for converting source code to build artifacts in an efficient, expressive and repeatable manner. Prior to version 0.28.1, insufficient validation of Git URL fragment subdir components may allow access to files outside the checked-out Git repository root. Possible access is limited to files on the same mounted filesystem. The issue has been fixed in version v0.28.1 The issue affects only builds that use Git URLs with a subpath component. As a workaround, avoid building Dockerfiles from untrusted sources or using the subdir component from an untrusted Git repository where the subdir component could point to a symlink.
References
| Link | Resource |
|---|---|
| https://docs.docker.com/build/concepts/context/#url-fragments | Product |
| https://github.com/moby/buildkit/releases/tag/v0.28.1 | Product Release Notes |
| https://github.com/moby/buildkit/security/advisories/GHSA-4vrq-3vrq-g6gg | Mitigation Vendor Advisory |
Configurations
History
20 Apr 2026, 12:37
| Type | Values Removed | Values Added |
|---|---|---|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 7.5 |
| First Time |
Mobyproject
Mobyproject buildkit |
|
| References | () https://docs.docker.com/build/concepts/context/#url-fragments - Product | |
| References | () https://github.com/moby/buildkit/releases/tag/v0.28.1 - Product, Release Notes | |
| References | () https://github.com/moby/buildkit/security/advisories/GHSA-4vrq-3vrq-g6gg - Mitigation, Vendor Advisory | |
| CPE | cpe:2.3:a:mobyproject:buildkit:*:*:*:*:*:*:*:* |
27 Mar 2026, 15:16
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-03-27 15:16
Updated : 2026-04-20 12:37
NVD link : CVE-2026-33748
Mitre link : CVE-2026-33748
CVE.ORG link : CVE-2026-33748
JSON object : View
Products Affected
mobyproject
- buildkit