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
Low severity
Low
See what this means
CVSS v3 Base Score
2.5
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