Incorrect Authorization Affecting github.com/docker/buildx/bake package, versions >=0.19.0 <0.38.2
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Start learning- Snyk IDSNYK-GOLANG-GITHUBCOMDOCKERBUILDXBAKE-22498303
- published12 Nov 2026
- disclosed3 Nov 2026
- credithCaptcha Security Team
Introduced: 3 Nov 2026
NewCVE-2026-121542 Â (opens in a new tab)How to fix?
Upgrade github.com/docker/buildx/bake to version 0.38.2 or higher.
Overview
Affected versions of this package are vulnerable to Incorrect Authorization via the isParentOrEqualPath function in Bake filesystem entitlement validation. An attacker can supply an untrusted Bake definition that references a sibling path whose name shares the approved directory’s prefix, causing Bake to treat that path as approved and expose files accessible to the Buildx client without the expected fs.read approval. The matching sibling path must exist next to the project directory, and the user must run the definition.
Notes
- At the impact step, exposure is limited to files the Buildx client can access; the prefix bypass does not grant access to otherwise inaccessible files.
Workarounds
- Run only trusted Bake definitions to prevent untrusted definitions from exploiting the filesystem entitlement bypass.
- Check Bake definitions for suspicious paths outside trusted directories, and do not build definitions that reference them; this limits access to files outside those directories.