CVE-2026-15793
Received Received - Intake

BuildKit Git Source Command Injection via checkoutbundle

Publication date: 2026-07-21

Last updated on: 2026-07-21

Assigner: Docker Inc.

Description
BuildKit custom frontends or clients using the raw low-level API can set git.checkoutbundle=true when checking out Git sources. If the Git source is malicious, this could lead to a crafted command invocation on the host.

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Meta Information

Published
2026-07-21
Last Modified
2026-07-21
Generated
2026-07-21
AI Q&A
2026-07-21
EPSS Evaluated
N/A
NVD
CVE-2026-15793
EUVD
EUVD-2026-46312

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
docker buildkit From 0.30.0 (inc) to 0.31.2 (exc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-88 The product constructs a string for a command to be executed by a separate component in another control sphere, but it does not properly delimit the intended arguments, options, or switches within that command string.

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Executive Summary

This vulnerability allows custom BuildKit frontends or clients using the raw low-level API to set git.checkoutbundle=true when checking out Git sources. If the Git source is malicious, it could lead to a crafted command being executed on the host system.

Detection Guidance

To detect this vulnerability, check the version of BuildKit installed on your system. Run: docker buildx version. If the version is between v0.30.0 and v0.31.1, the system is vulnerable. Additionally, inspect custom frontends or clients using the raw low-level API for the use of git.checkoutbundle=true.

Impact Analysis

An attacker could exploit this to execute arbitrary commands on the host system if they control a malicious Git source. This could lead to unauthorized access, data theft, or further compromise of the host environment.

Compliance Impact

This vulnerability could lead to unauthorized access or data breaches, which may violate compliance requirements such as GDPR (data protection) or HIPAA (health information privacy). Organizations using affected BuildKit versions may face regulatory penalties or reputational damage.

Mitigation Strategies

Upgrade BuildKit to version v0.31.2 or later. Run: docker buildx upgrade. If using Dockerfile builds, no action is required as they are not affected. Review and remove any custom frontends or clients using git.checkoutbundle=true.

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