CVE Explorer

CVE-2026-33747

BuildKit is a toolkit for converting source code to build artifacts in an efficient, expressive and repeatable manner. Prior to version 0.28.1, when using a custom BuildKit frontend, the frontend can craft an API message that causes files to be written outside of the BuildKit state directory for the execution context. The issue has been fixed in v0.28.1. The vulnerability requires using an untrusted BuildKit frontend set with `#syntax` or `--build-arg BUILDKIT_SYNTAX`. Using these options with a

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:4e92447aa7abdac930ec9653d1eebe348491f6d189ea3d425c9035f570f86022

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Affected products and versions

1 source assertion

{"product":"buildkit","vendor":"moby","versions":[{"status":"affected","version":"< 0.28.1"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:91e659d2c1e095e03685ec6b771173b04a3ed64cc054a9c166f169e296e9687d · sha256:b8b7cad96ab8c0b3… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion

{"metric":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"HIGH","baseScore":8.4,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:91e659d2c1e095e03685ec6b771173b04a3ed64cc054a9c166f169e296e9687d · sha256:b8b7cad96ab8c0b3… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion

{"cweId":"CWE-22","description":"CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:91e659d2c1e095e03685ec6b771173b04a3ed64cc054a9c166f169e296e9687d · sha256:b8b7cad96ab8c0b3… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions

{"name":"https://github.com/moby/buildkit/releases/tag/v0.28.1","tags":["x_refsource_MISC"],"url":"https://github.com/moby/buildkit/releases/tag/v0.28.1"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:91e659d2c1e095e03685ec6b771173b04a3ed64cc054a9c166f169e296e9687d · sha256:b8b7cad96ab8c0b3… · /containers/cna/references/1

{"name":"https://github.com/moby/buildkit/security/advisories/GHSA-4c29-8rgm-jvjj","tags":["x_refsource_CONFIRM"],"url":"https://github.com/moby/buildkit/security/advisories/GHSA-4c29-8rgm-jvjj"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:91e659d2c1e095e03685ec6b771173b04a3ed64cc054a9c166f169e296e9687d · sha256:b8b7cad96ab8c0b3… · /containers/cna/references/0

Attribution and limitations

CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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