CVE-2026-121542
Public on 2026-11-03
Modified on 2026-11-07
Description
In Docker Buildx versions v0.19.0 through v0.38.0, an untrusted Bake definition may expose files accessible to the Buildx client without the expected fs.read approval. Under certain conditions, paths under the same parent directory as the current working directory whose names use the working directory's basename as a prefix can skip the filesystem entitlement check. Exploitation requires specific matching filenames next to the current project directory. Users who run untrusted Bake definitions may be affected. The issue is fixed in v0.38.1.
Severity
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CVSS v3 Base Score
See breakdown
Affected Packages
| Platform | Package | Release Date | Advisory | Status |
|---|---|---|---|---|
| Amazon Linux 2 - Aws-nitro-enclaves-cli Extra | docker | Not Affected | ||
| Amazon Linux 2 - Docker Extra | docker | Not Affected | ||
| Amazon Linux 2 - Ecs Extra | docker | Not Affected | ||
| Amazon Linux 2023 | docker | Not Affected | ||
| Amazon Linux 2027 Preview | docker | Pending Fix |
CVSS Scores
| Score Type | Score | Vector | |
|---|---|---|---|
| Amazon Linux | CVSSv3 | 2.5 | CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N |