CVE-2026-121542Low· 1.8▾ SunlitIn 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 th…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 9.9 · likelihood 0 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake. The CVSS score shown above comes from the assigning CNA record, not NVD.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
Last analysed / modified upstream
0.1%
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.
buildx >= 0.19.0 < 0.38.1Upgrade Docker Buildx to v0.38.1 or later.
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.
Connected by shared product, vendor, weakness, or advisory.
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