EUVD-2026-16518Published

BuildKit vulnerable to malicious frontend causing file escape outside of storage root

Exploitation and risk

CISA KEV lists vulnerabilities known to be exploited. FIRST EPSS estimates the likelihood of exploitation in the next 30 days. An unavailable score does not mean zero risk.

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cve-program · CVE-2026-33747

Published

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 well-known frontend image like `docker/dockerfile` is not affected.

Source published: 27 Mar 2026 00:49:06 UTC
Source modified: 27 Mar 2026 19:59:06 UTC
Saved here: 23 Oct 2026 15:48:27 UTC
Source terms: CVE Program Terms of Use

Original source record · Cite this exact observation · Complete original publisher JSON

Source: cve-program · CVE Program Terms of Use. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.

CVSS 3.1 · 8.4 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

euvd · EUVD-2026-16518

Published

Additional publisher context

EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON.

Original publisher date fields

datePublished: Mar 27, 2026, 12:49:06 AM

dateUpdated: Mar 27, 2026, 7:59:06 PM

26 related source bulletins · separate from aliases

RHSA-2026:9440: Red Hat Security Advisory: Red Hat OpenShift Service Mesh 3.0.10

CVE-2026-25679 · CVE-2026-33186 · CVE-2026-33747 · CVE-2026-33748

openSUSE-SU-2026:10472-1: conftest-0.67.1-2.1 on GA media

CVE-2026-33747

openSUSE-SU-2026:11075-1: docker-stable-24.0.9_ce-18.1 on GA media

CVE-2026-33186 · CVE-2026-33747 · CVE-2026-33748 · CVE-2026-33814 · CVE-2026-33997 · CVE-2026-34040 · CVE-2026-39821 · CVE-2026-41567

RHSA-2026:57013: Red Hat Security Advisory: Red Hat OpenShift Data Foundation 4.20.17 security, enhancement & bug fix update

CVE-2025-61726 · CVE-2026-6321 · CVE-2026-6322 · CVE-2026-6734 · CVE-2026-9697 · CVE-2026-12143 · CVE-2026-12151 · CVE-2026-13149 · CVE-2026-13676 · CVE-2026-25681 · CVE-2026-27136 · CVE-2026-33186 · CVE-2026-33747 · CVE-2026-33748 · CVE-2026-34986 · CVE-2026-44740 · CVE-2026-45736 · CVE-2026-48779 · CVE-2026-53488 · CVE-2026-53489 · CVE-2026-53492 · CVE-2026-59869

RHSA-2026:51033: Red Hat Security Advisory: Red Hat OpenShift API for Data Protection

CVE-2024-25621 · CVE-2025-61726 · CVE-2025-61728 · CVE-2025-61729 · CVE-2025-66506 · CVE-2025-68121 · CVE-2026-25681 · CVE-2026-27136 · CVE-2026-32280 · CVE-2026-32281 · CVE-2026-32282 · CVE-2026-33186 · CVE-2026-33747 · CVE-2026-33748 · CVE-2026-33810 · CVE-2026-33811 · CVE-2026-34986 · CVE-2026-39820 · CVE-2026-39821 · CVE-2026-39828 · CVE-2026-39829 · CVE-2026-39830 · CVE-2026-39831 · CVE-2026-39835 · CVE-2026-42306 · CVE-2026-42499 · CVE-2026-42508 · CVE-2026-44740 · CVE-2026-46595 · CVE-2026-46597 · CVE-2026-53488 · CVE-2026-53492

RHSA-2026:37387: Red Hat Security Advisory: Red Hat OpenShift Data Foundation 4.22.0 security, enhancement & bug fix update

CVE-2024-25621 · CVE-2024-40635 · CVE-2024-45310 · CVE-2025-8766 · CVE-2025-21613 · CVE-2025-21614 · CVE-2025-22870 · CVE-2025-47911 · CVE-2025-52881 · CVE-2025-54410 · CVE-2025-58058 · CVE-2025-64329 · CVE-2025-66506 · CVE-2026-22772 · CVE-2026-23831 · CVE-2026-24117 · CVE-2026-25680 · CVE-2026-25681 · CVE-2026-25934 · CVE-2026-27136 · CVE-2026-27141 · CVE-2026-27903 · CVE-2026-33540 · CVE-2026-33747 · CVE-2026-33748 · CVE-2026-33814 · CVE-2026-34986 · CVE-2026-35172 · CVE-2026-35469 · CVE-2026-39821 · CVE-2026-39827 · CVE-2026-39828 · CVE-2026-39829 · CVE-2026-39830 · CVE-2026-39831 · CVE-2026-39832 · CVE-2026-39833 · CVE-2026-39834 · CVE-2026-39835 · CVE-2026-39883 · CVE-2026-41506 · CVE-2026-41567 · CVE-2026-41568 · CVE-2026-42502 · CVE-2026-42506 · CVE-2026-42508 · CVE-2026-44740 · CVE-2026-45571 · CVE-2026-46595 · CVE-2026-46597 · CVE-2026-46598

SUSE-SU-2026:2120-1: Security update for docker-stable

CVE-2026-33747 · CVE-2026-33748

openSUSE-SU-2026:20809-1: Security update for trivy

CVE-2025-64702 · CVE-2025-69725 · CVE-2026-25934 · CVE-2026-33186 · CVE-2026-33747 · CVE-2026-33748 · CVE-2026-34986 · CVE-2026-39984 · CVE-2026-41506

openSUSE-SU-2026:10456-1: tailscale-1.96.4-1.1 on GA media

CVE-2026-33747

RHSA-2026:10125: Red Hat Security Advisory: RHTAS 1.3.4 - Red Hat Trusted Artifact Signer Release

CVE-2025-68121 · CVE-2026-25679 · CVE-2026-27137 · CVE-2026-33186 · CVE-2026-33211 · CVE-2026-33747 · CVE-2026-33748 · CVE-2026-34986

openSUSE-SU-2026:10651-1: trivy-0.70.0-1.1 on GA media

CVE-2025-69725 · CVE-2026-25934 · CVE-2026-33186 · CVE-2026-33747 · CVE-2026-33748 · CVE-2026-34986 · CVE-2026-39984

RHSA-2026:26568: Red Hat Security Advisory: Red Hat OpenShift API for Data Protection

CVE-2026-25679 · CVE-2026-27137 · CVE-2026-32280 · CVE-2026-32281 · CVE-2026-32282 · CVE-2026-33186 · CVE-2026-33747 · CVE-2026-33748 · CVE-2026-33810 · CVE-2026-34986

openSUSE-SU-2026:20814-1: Security update for docker-stable

CVE-2026-33747 · CVE-2026-33748

openSUSE-SU-2026:22203-1: Security update for tailscale

CVE-2026-33747

SUSE-SU-2026:21851-1: Security update for docker-stable

CVE-2026-33747 · CVE-2026-33748

RHSA-2026:9453: Red Hat Security Advisory: Red Hat OpenShift Service Mesh 3.2.4

CVE-2026-25679 · CVE-2026-33186 · CVE-2026-33747 · CVE-2026-33748 · CVE-2026-34986

RHSA-2026:46885: Red Hat Security Advisory: multicluster engine for Kubernetes v2.10.4 security update

CVE-2025-58183 · CVE-2026-16242 · CVE-2026-17107 · CVE-2026-33747 · CVE-2026-33748 · CVE-2026-33811 · CVE-2026-34986 · CVE-2026-39828 · CVE-2026-39829 · CVE-2026-39830 · CVE-2026-39835 · CVE-2026-42508 · CVE-2026-44486 · CVE-2026-44487 · CVE-2026-44488 · CVE-2026-44492 · CVE-2026-44494 · CVE-2026-44495 · CVE-2026-44496 · CVE-2026-44740 · CVE-2026-44990 · CVE-2026-59869

SUSE-SU-2026:2578-1: Security update for docker-stable

CVE-2026-33747 · CVE-2026-33748 · CVE-2026-33997 · CVE-2026-34040

WID-SEC-W-2026-0873: docker: Mehrere Schwachstellen

CVE-2026-33747 · CVE-2026-33748 · CVE-2026-33997 · CVE-2026-34040

RHSA-2026:22465: Red Hat Security Advisory: Red Hat Quay 3.17.2

CVE-2025-62718 · CVE-2026-4427 · CVE-2026-27459 · CVE-2026-29063 · CVE-2026-29074 · CVE-2026-32280 · CVE-2026-32281 · CVE-2026-32282 · CVE-2026-32286 · CVE-2026-32589 · CVE-2026-32590 · CVE-2026-33186 · CVE-2026-33747 · CVE-2026-33894 · CVE-2026-34986 · CVE-2026-39892 · CVE-2026-40192 · CVE-2026-40895 · CVE-2026-42033 · CVE-2026-42035 · CVE-2026-42039 · CVE-2026-42041 · CVE-2026-42043 · CVE-2026-42044 · CVE-2026-44486 · CVE-2026-44487 · CVE-2026-44488 · CVE-2026-44492 · CVE-2026-44494 · CVE-2026-44495 · CVE-2026-44496

RHSA-2026:9448: Red Hat Security Advisory: Red Hat OpenShift Service Mesh 3.1.7

CVE-2026-25679 · CVE-2026-33186 · CVE-2026-33747 · CVE-2026-33748 · CVE-2026-34986

RHSA-2026:70267: Red Hat Security Advisory: Red Hat Quay 3.14.9

CVE-2026-4427 · CVE-2026-6322 · CVE-2026-9277 · CVE-2026-10143 · CVE-2026-12143 · CVE-2026-13149 · CVE-2026-13676 · CVE-2026-14257 · CVE-2026-15792 · CVE-2026-15927 · CVE-2026-16221 · CVE-2026-18255 · CVE-2026-32591 · CVE-2026-33747 · CVE-2026-33748 · CVE-2026-33818 · CVE-2026-39820 · CVE-2026-39821 · CVE-2026-39822 · CVE-2026-39828 · CVE-2026-39829 · CVE-2026-39830 · CVE-2026-39831 · CVE-2026-39832 · CVE-2026-39835 · CVE-2026-42151 · CVE-2026-42154 · CVE-2026-42499 · CVE-2026-42504 · CVE-2026-42508 · CVE-2026-44432 · CVE-2026-44486 · CVE-2026-44487 · CVE-2026-44488 · CVE-2026-44492 · CVE-2026-44494 · CVE-2026-44495 · CVE-2026-44496 · CVE-2026-44705 · CVE-2026-44990 · CVE-2026-46595 · CVE-2026-46597 · CVE-2026-48526 · CVE-2026-49477 · CVE-2026-54058 · CVE-2026-54060 · CVE-2026-55379 · CVE-2026-55380 · CVE-2026-56852 · CVE-2026-56853 · CVE-2026-56858 · CVE-2026-56859 · CVE-2026-56860 · CVE-2026-56862 · CVE-2026-57231 · CVE-2026-59197 · CVE-2026-59199 · CVE-2026-59200 · CVE-2026-59204 · CVE-2026-59205 · CVE-2026-59869 · CVE-2026-59885 · CVE-2026-59886 · CVE-2026-67213 · CVE-2026-67214 · CVE-2026-67313 · CVE-2026-67314 · CVE-2026-67320 · CVE-2026-67321 · CVE-2026-69152 · CVE-2026-69153 · CVE-2026-73086 · CVE-2026-73088 · CVE-2026-73089 · CVE-2026-84375

RHSA-2026:42644: Red Hat Security Advisory: RHOAI 2.25.9 - Red Hat OpenShift AI

CVE-2024-12224 · CVE-2025-14920 · CVE-2025-14921 · CVE-2025-14924 · CVE-2025-14926 · CVE-2025-14927 · CVE-2025-14928 · CVE-2025-14929 · CVE-2025-14930 · CVE-2025-69227 · CVE-2025-69228 · CVE-2026-5241 · CVE-2026-8643 · CVE-2026-11816 · CVE-2026-22773 · CVE-2026-22807 · CVE-2026-23490 · CVE-2026-24486 · CVE-2026-24779 · CVE-2026-25048 · CVE-2026-25681 · CVE-2026-25960 · CVE-2026-25990 · CVE-2026-27136 · CVE-2026-27145 · CVE-2026-27893 · CVE-2026-28356 · CVE-2026-28684 · CVE-2026-32281 · CVE-2026-32283 · CVE-2026-32597 · CVE-2026-32981 · CVE-2026-33186 · CVE-2026-33236 · CVE-2026-33699 · CVE-2026-33747 · CVE-2026-33811 · CVE-2026-33814 · CVE-2026-34478 · CVE-2026-34480 · CVE-2026-34993 · CVE-2026-39820 · CVE-2026-39821 · CVE-2026-39892 · CVE-2026-42499 · CVE-2026-42504 · CVE-2026-42578 · CVE-2026-42581 · CVE-2026-42584 · CVE-2026-42587 · CVE-2026-43868 · CVE-2026-43869 · CVE-2026-44431 · CVE-2026-44432 · CVE-2026-44660 · CVE-2026-48526 · CVE-2026-48746 · CVE-2026-54293

RHSA-2026:30650: Red Hat Security Advisory: multicluster engine for Kubernetes v2.8.8 security update

CVE-2025-47914 · CVE-2025-58183 · CVE-2026-33747 · CVE-2026-33748 · CVE-2026-34986 · CVE-2026-35206 · CVE-2026-39821 · CVE-2026-44486 · CVE-2026-44487 · CVE-2026-44488 · CVE-2026-44492 · CVE-2026-44494 · CVE-2026-44495 · CVE-2026-44496 · CVE-2026-46595

RHSA-2026:47388: Red Hat Security Advisory: multicluster engine for Kubernetes v2.10.4 security update

RHSA-2026:29854: Red Hat Security Advisory: Red Hat OpenShift API for Data Protection

CVE-2025-68121 · CVE-2026-25679 · CVE-2026-27137 · CVE-2026-32280 · CVE-2026-32281 · CVE-2026-32282 · CVE-2026-33186 · CVE-2026-33747 · CVE-2026-33748 · CVE-2026-33810 · CVE-2026-34986

Source published: Mar 27, 2026, 12:49:06 AM (timezone not stated)
Source modified: Mar 27, 2026, 7:59:06 PM (timezone not stated)
Saved here: 15 Nov 2026 10:04:37 UTC
Source terms: ENISA EUVD · source terms and attribution apply

Original source record · Cite this exact observation · Complete original publisher JSON

Source: euvd · ENISA EUVD · source terms and attribution apply. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.

EUVD CVSS 3.1 · 8.4 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

nvd · CVE-2026-33747

Published

Additional publisher context

NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON.

Source analysis status: Analyzed

Weakness classifications: CWE-22

Original publisher date fields

published: 2026-03-27T01:16:21.330

lastModified: 2026-06-17T10:38:01.807

1 source CPE criteria · context only

cpe:2.3:a:mobyproject:buildkit:*:*:*:*:*:*:*:*

The original JSON retains the logical configuration operators, exclusions and version bounds.

Source published: 27 Mar 2026 01:16:21 UTC
Source modified: 17 Jun 2026 10:38:01 UTC
Saved here: 25 Oct 2026 08:17:24 UTC
Source terms: NIST NVD usage terms; underlying source attribution retained

Original source record · Cite this exact observation · Complete original publisher JSON

Source: nvd · NIST NVD usage terms; underlying source attribution retained. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.

CVSS 3.1 · [email protected] · Secondary · 8.4 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS 3.1 · [email protected] · Primary · 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

osv · GHSA-4c29-8rgm-jvjj

Published

### Impact 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. ### Patches The issue has been fixed in v0.28.1+ ### Workarounds Issue requires using an untrusted BuildKit frontend set with `#syntax` or `--build-arg BUILDKIT_SYNTAX`. Using these options with a well-known frontend image like `docker/dockerfile` is not affected.

Source published: 26 Mar 2026 18:26:09 UTC
Source modified: 10 Sep 2026 03:50:37 UTC
Saved here: 24 Oct 2026 13:19:41 UTC
Source terms: GitHub Advisory Database · CC-BY-4.0

Original source record · Cite this exact observation · Complete original publisher JSON

Source: osv · GitHub Advisory Database · CC-BY-4.0. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.

CVSS_V3 · CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Publisher rating · HIGH

osv · GO-2026-4858

Published

BuildKit's Malicious frontend can cause file escape outside of storage root in github.com/moby/buildkit

Source published: 27 Mar 2026 18:39:44 UTC
Source modified: 28 Mar 2026 15:59:16 UTC
Saved here: 24 Oct 2026 13:19:41 UTC
Source terms: OSV · upstream source license applies

Original source record · Cite this exact observation · Complete original publisher JSON

Source: osv · OSV · upstream source license applies. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.