Bug 2566540 (CVE-2026-121541) - CVE-2026-121541 github.com/docker/buildx: Docker Buildx: Information disclosure via untrusted multi-target Bake definitions
Summary: CVE-2026-121541 github.com/docker/buildx: Docker Buildx: Information disclosu...
Keywords:
Status: NEW
Alias: CVE-2026-121541
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-11-03 22:11 UTC by OSIDB Bzimport
Modified: 2026-11-05 15:07 UTC (History)
10 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)

Description OSIDB Bzimport 2026-11-03 22:11:15 UTC 
In Docker Buildx versions v0.19.0 through v0.38.0, an untrusted Bake definition that builds multiple targets together may expose files accessible to the Buildx client without the expected fs.read approval. Under certain conditions, filesystem paths from some targets are not verified against the approved entitlements. Users who run untrusted Bake definitions may be affected. The issue is fixed in v0.38.1.
Note You need to log in before you can comment on or make changes to this bug.