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Vendor Solution
Upgrade Docker Buildx to v0.38.1 or later.
Vendor Workaround
Run only trusted Bake definitions until upgrading. Check that Bake definitions do not contain suspicious paths outside trusted directories. The issue requires specific matching filenames next to the current project directory.
Tracking
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Wed, 04 Nov 2026 19:30:00 +0000
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ssvc
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Tue, 03 Nov 2026 22:15:00 +0000
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| 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. | |
| Title | Bake filesystem path entitlements approval can be skipped for path using basename prefix | |
| Weaknesses | CWE-22 | |
| References |
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| Metrics |
cvssV4_0
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Subscriptions
No data.
Status: PUBLISHED
Assigner: Docker
Published:
Updated: 2026-11-04T18:20:22.776Z
Reserved: 2026-11-03T14:41:50.995Z
Link: CVE-2026-121542
Updated: 2026-11-04T18:12:24.363Z
Status : Received
Published: 2026-11-03T22:19:46.737
Modified: 2026-11-04T19:17:30.733
Link: CVE-2026-121542
No data.
OpenCVE Enrichment
Updated: 2026-11-04T09:00:16Z
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CWE-22
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')