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Vulnerability record · CVE-2024-23651 · published 31 January 2024

CVE-2024-23651: Mobyproject buildkit race condition vulnerability

Mobyproject · Buildkit

BuildKit is a toolkit for converting source code to build artifacts in an efficient, expressive and repeatable manner. Two malicious build steps running in parallel sharing the same cache mounts with subpaths could cause a race condition that can lead to files from the host system being accessible to the build container. The issue has been fixed in v0.12.5. Workarounds include, avoiding using BuildKit frontend from an untrusted source or building an untrusted Dockerfile containing cache mounts with --mount=type=cache,source=... options.

7.4 CVSS 3.1 High EPSS 0.79% · top 45.5% CWE-362 · Race condition
7.4CVSS 3.1 base score
0.79%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
6References
17 Jun 2026Last modified by NVD

Description

BuildKit is a toolkit for converting source code to build artifacts in an efficient, expressive and repeatable manner. Two malicious build steps running in parallel sharing the same cache mounts with subpaths could cause a race condition that can lead to files from the host system being accessible to the build container. The issue has been fixed in v0.12.5. Workarounds include, avoiding using BuildKit frontend from an untrusted source or building an untrusted Dockerfile containing cache mounts with --mount=type=cache,source=... options.

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/moby/buildkit/pull/4604 PatchVendor Advisory
https://github.com/moby/buildkit/releases/tag/v0.12.5 PatchRelease Notes
https://github.com/moby/buildkit/security/advisories/GHSA-m3r6-h7wv-7xxv Vendor Advisory
https://github.com/moby/buildkit/pull/4604 PatchVendor Advisory
https://github.com/moby/buildkit/releases/tag/v0.12.5 PatchRelease Notes
https://github.com/moby/buildkit/security/advisories/GHSA-m3r6-h7wv-7xxv Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2024-23651), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.