CVE catalog
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
- Severity
- High · CVSS 8.4
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.51% · Oct 25, 2026
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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | docker.io | sid | 28.5.2+dfsg4-5 | fixed |
| Debian | docker.io | forky | 28.5.2+dfsg4-5 | fixed |
| Debian | docker.io | trixie | 26.1.5+dfsg1-9+deb13u1 | fixed |
| Debian | docker.io | trixie-security | 26.1.5+dfsg1-9+deb13u1 | fixed |
| Debian | docker.io | bookworm | 20.10.24+dfsg1-1+deb12u1 | vulnerable |
| Cpe | docker.io-app | Not reported | 29.1.3-0ubuntu3~24.04.2 | fixed |
| Cpe | docker-doc | Not reported | 29.1.3-0ubuntu3~24.04.2 | fixed |
| Cpe | docker.io | Not reported | 29.1.3-0ubuntu3~24.04.2 | fixed |
| Cpe | docker.io | Not reported | Not reported | vulnerable |
| Cpe | buildkit | Not reported | 0.28.1 | fixed |
| Go | github.com/moby/buildkit | Not reported | 0.28.1 | fixed |
| Suse | docker-stable | linux enterprise server 12 sp5-ltss | 24.0.9_ce-1.37.1 | fixed |
| Suse | docker-stable | linux enterprise server ltss extended security 12 sp5 | 24.0.9_ce-1.37.1 | fixed |
| Ubuntu | docker.io-app | pro | 20.10.25-0ubuntu1~20.04.1 | vulnerable |
| Ubuntu | docker.io-app | pro | 20.10.25-0ubuntu1~20.04.2 | vulnerable |
| Ubuntu | docker.io-app | pro | 24.0.5-0ubuntu1~20.04.1 | vulnerable |
| Ubuntu | docker.io-app | pro | 24.0.7-0ubuntu2~20.04.1 | vulnerable |
| Ubuntu | docker.io-app | pro | 26.1.3-0ubuntu1~20.04.1 | vulnerable |
| Ubuntu | docker.io-app | pro | 26.1.3-0ubuntu1~20.04.1+esm1 | vulnerable |
| Ubuntu | docker.io-app | pro | 26.1.3-0ubuntu1~20.04.1+esm2 | fixed |
| Ubuntu | docker.io-app | 22.04 | 20.10.25-0ubuntu1~22.04.1 | vulnerable |
| Ubuntu | docker.io-app | 22.04 | 20.10.25-0ubuntu1~22.04.2 | vulnerable |
| Ubuntu | docker.io-app | 22.04 | 24.0.5-0ubuntu1~22.04.1 | vulnerable |
| Ubuntu | docker.io-app | 22.04 | 24.0.7-0ubuntu2~22.04.1 | vulnerable |
| Ubuntu | docker.io-app | 22.04 | 26.1.3-0ubuntu1~22.04.1 | vulnerable |
| Ubuntu | docker.io-app | 22.04 | 27.5.1-0ubuntu3~22.04.1 | vulnerable |
| Ubuntu | docker.io-app | 22.04 | 27.5.1-0ubuntu3~22.04.2 | vulnerable |
| Ubuntu | docker.io-app | 22.04 | 28.2.2-0ubuntu1~22.04.1 | vulnerable |
| Ubuntu | docker.io-app | 22.04 | 29.1.3-0ubuntu3~22.04.1 | vulnerable |
| Ubuntu | docker.io-app | 22.04 | 29.1.3-0ubuntu3~22.04.2 | fixed |
| Ubuntu | docker.io-app | 24.04 | 24.0.5-0ubuntu1 | vulnerable |
| Ubuntu | docker.io-app | 24.04 | 24.0.7-0ubuntu1 | vulnerable |
| Ubuntu | docker.io-app | 24.04 | 24.0.7-0ubuntu2 | vulnerable |
| Ubuntu | docker.io-app | 24.04 | 24.0.7-0ubuntu3 | vulnerable |
| Ubuntu | docker.io-app | 24.04 | 24.0.7-0ubuntu4 | vulnerable |
| Ubuntu | docker.io-app | 24.04 | 24.0.7-0ubuntu4.1 | vulnerable |
| Ubuntu | docker.io-app | 24.04 | 26.1.3-0ubuntu1~24.04.1 | vulnerable |
| Ubuntu | docker.io-app | 24.04 | 27.5.1-0ubuntu3~24.04.1 | vulnerable |
| Ubuntu | docker.io-app | 24.04 | 27.5.1-0ubuntu3~24.04.2 | vulnerable |
| Ubuntu | docker.io-app | 24.04 | 28.2.2-0ubuntu1~24.04.1 | vulnerable |
| Ubuntu | docker.io-app | 24.04 | 29.1.3-0ubuntu3~24.04.1 | vulnerable |
| Ubuntu | docker.io-app | 24.04 | 29.1.3-0ubuntu3~24.04.2 | fixed |
| Ubuntu | docker.io-app | 26.04 | 28.2.2-0ubuntu1 | vulnerable |
| Ubuntu | docker.io-app | 26.04 | 29.1.2-0ubuntu1 | vulnerable |
| Ubuntu | docker.io-app | 26.04 | 29.1.3-0ubuntu1 | vulnerable |
| Ubuntu | docker.io-app | 26.04 | 29.1.3-0ubuntu2 | vulnerable |
| Ubuntu | docker.io-app | 26.04 | 29.1.3-0ubuntu3 | vulnerable |
| Ubuntu | docker.io-app | 26.04 | 29.1.3-0ubuntu4 | vulnerable |
| Ubuntu | docker.io-app | 26.04 | 29.1.3-0ubuntu4.1 | fixed |
| Opensuse | conftest | tumbleweed | 0.67.1-2.1 | fixed |
| Opensuse | tailscale | tumbleweed | 1.96.4-1.1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | docker.io | source | sid | 28.5.2+dfsg4-3 | not yet assigned | Not reported | [1140189] |
| Debian | docker.io | source | forky | 28.5.2+dfsg4-3 | not yet assigned | Not reported | [1140189] |
| Debian | docker.io | source | trixie | 26.1.5+dfsg1-9+deb13u1 | not yet assigned | Not reported | [1140189] |
| Debian | docker.io | source | bookworm | (unfixed) | not yet assigned | Not reported | [1140189] |
| Cpe | docker.io-app | cpe | Not reported | 29.1.3-0ubuntu3~24.04.2 | Not reported | Not reported | Not reported |
| Cpe | docker-doc | cpe | Not reported | 29.1.3-0ubuntu3~24.04.2 | Not reported | Not reported | Not reported |
| Cpe | docker.io | cpe | Not reported | 29.1.3-0ubuntu3~24.04.2 | Not reported | Not reported | Not reported |
| Cpe | buildkit | cpe | Not reported | 0.28.1 | Not reported | Not reported | Not reported |
| Go | github.com/moby/buildkit | Go | Not reported | 0.28.1 | Not reported | GHSA-4C29-8RGM-JVJJ | Not reported |
| Suse | docker-stable | rpm | linux enterprise server 12 sp5-ltss | 24.0.9_ce-1.37.1 | Not reported | SUSE-SU-2026:2578-1 | Not reported |
| Suse | docker-stable | rpm | linux enterprise server ltss extended security 12 sp5 | 24.0.9_ce-1.37.1 | Not reported | SUSE-SU-2026:2578-1 | Not reported |
| Ubuntu | docker.io-app | deb | pro | 26.1.3-0ubuntu1~20.04.1+esm2 | Not reported | USN-8230-1 | Not reported |
| Ubuntu | docker.io-app | deb | 22.04 | 29.1.3-0ubuntu3~22.04.2 | Not reported | USN-8230-1 | Not reported |
| Ubuntu | docker.io-app | deb | 24.04 | 29.1.3-0ubuntu3~24.04.2 | Not reported | USN-8230-1 | Not reported |
| Ubuntu | docker.io-app | deb | 26.04 | 29.1.3-0ubuntu4.1 | Not reported | USN-8230-1 | Not reported |
| Opensuse | conftest | rpm | tumbleweed | 0.67.1-2.1 | Not reported | OPENSUSE-SU-2026:10472-1 | Not reported |
| Opensuse | tailscale | rpm | tumbleweed | 1.96.4-1.1 | Not reported | OPENSUSE-SU-2026:10456-1 | Not reported |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [docker-doc]Affected
Source package: [docker.io]
Details (2)
20.10.24+dfsg1-1+deb12u1· all · bookwormAffected
nvd · docker.io · debian · bookworm; nvd · docker.io · debian · 12
20.10.24+dfsg1-1+deb12u1· all · bookwormAffected
nvd · docker.io · debian · bookworm; nvd · docker.io · debian · 12
- [docker.io]Affected
Source package: [docker.io]
Details (2)
20.10.24+dfsg1-1+deb12u1+b6· amd64 · bookwormAffected
nvd · docker.io · debian · bookworm; nvd · docker.io · debian · 12
20.10.24+dfsg1-1+deb12u1+b6· arm64 · bookwormAffected
nvd · docker.io · debian · bookworm; nvd · docker.io · debian · 12
- [golang-github-docker-docker-dev]Affected
Source package: [docker.io]
Details (2)
20.10.24+dfsg1-1+deb12u1· all · bookwormAffected
nvd · docker.io · debian · bookworm; nvd · docker.io · debian · 12
20.10.24+dfsg1-1+deb12u1· all · bookwormAffected
nvd · docker.io · debian · bookworm; nvd · docker.io · debian · 12
[Debian 13 (Trixie)]
- [docker-cli]Affected
Source package: [docker.io]
Details (4)
26.1.5+dfsg1-9+b13· amd64 · trixieAffected · Fixed:
26.1.5+dfsg1-9+deb13u1nvd · docker.io · debian · 13
26.1.5+dfsg1-9+b13· arm64 · trixieAffected · Fixed:
26.1.5+dfsg1-9+deb13u1nvd · docker.io · debian · 13
26.1.5+dfsg1-9+deb13u1· amd64 · trixie-securityFixed · Fixed:
26.1.5+dfsg1-9+deb13u1nvd · docker.io · debian · 13
26.1.5+dfsg1-9+deb13u1· arm64 · trixie-securityFixed · Fixed:
26.1.5+dfsg1-9+deb13u1nvd · docker.io · debian · 13
- [docker-doc]Affected
Source package: [docker.io]
Details (4)
26.1.5+dfsg1-9· all · trixieAffected · Fixed:
26.1.5+dfsg1-9+deb13u1nvd · docker.io · debian · 13
26.1.5+dfsg1-9· all · trixieAffected · Fixed:
26.1.5+dfsg1-9+deb13u1nvd · docker.io · debian · 13
26.1.5+dfsg1-9+deb13u1· all · trixie-securityFixed · Fixed:
26.1.5+dfsg1-9+deb13u1nvd · docker.io · debian · 13
26.1.5+dfsg1-9+deb13u1· all · trixie-securityFixed · Fixed:
26.1.5+dfsg1-9+deb13u1nvd · docker.io · debian · 13
- [docker.io]Affected
Details (4)
26.1.5+dfsg1-9+b13· amd64 · trixieAffected · Fixed:
26.1.5+dfsg1-9+deb13u1nvd · docker.io · debian · 13
26.1.5+dfsg1-9+b13· arm64 · trixieAffected · Fixed:
26.1.5+dfsg1-9+deb13u1nvd · docker.io · debian · 13
26.1.5+dfsg1-9+deb13u1· amd64 · trixie-securityFixed · Fixed:
26.1.5+dfsg1-9+deb13u1nvd · docker.io · debian · 13
26.1.5+dfsg1-9+deb13u1· arm64 · trixie-securityFixed · Fixed:
26.1.5+dfsg1-9+deb13u1nvd · docker.io · debian · 13
- [golang-github-docker-docker-dev]Affected
Source package: [docker.io]
Details (4)
26.1.5+dfsg1-9· all · trixieAffected · Fixed:
26.1.5+dfsg1-9+deb13u1nvd · docker.io · debian · 13
26.1.5+dfsg1-9· all · trixieAffected · Fixed:
26.1.5+dfsg1-9+deb13u1nvd · docker.io · debian · 13
26.1.5+dfsg1-9+deb13u1· all · trixie-securityFixed · Fixed:
26.1.5+dfsg1-9+deb13u1nvd · docker.io · debian · 13
26.1.5+dfsg1-9+deb13u1· all · trixie-securityFixed · Fixed:
26.1.5+dfsg1-9+deb13u1nvd · docker.io · debian · 13
[openSUSE Tumbleweed]
- [conftest-bash-completion]Unknown
Source package: [conftest]
Details (1)
0.69.0-1.1· noarch · tumbleweedUnknown · Fixed:
0.67.1-2.1Version impact unknown
nvd · conftest · opensuse · tumbleweed
- [conftest-fish-completion]Unknown
Source package: [conftest]
Details (1)
0.69.0-1.1· noarch · tumbleweedUnknown · Fixed:
0.67.1-2.1Version impact unknown
nvd · conftest · opensuse · tumbleweed
- [conftest-zsh-completion]Unknown
Source package: [conftest]
Details (1)
0.69.0-1.1· noarch · tumbleweedUnknown · Fixed:
0.67.1-2.1Version impact unknown
nvd · conftest · opensuse · tumbleweed
- [tailscale-bash-completion]Unknown
Source package: [tailscale]
Details (1)
1.102.3-1.1· noarch · tumbleweedUnknown · Fixed:
1.96.4-1.1Version impact unknown
nvd · tailscale · opensuse · tumbleweed
- [tailscale-fish-completion]Unknown
Source package: [tailscale]
Details (1)
1.102.3-1.1· noarch · tumbleweedUnknown · Fixed:
1.96.4-1.1Version impact unknown
nvd · tailscale · opensuse · tumbleweed
- [tailscale-zsh-completion]Unknown
Source package: [tailscale]
Details (1)
1.102.3-1.1· noarch · tumbleweedUnknown · Fixed:
1.96.4-1.1Version impact unknown
nvd · tailscale · opensuse · tumbleweed
- [conftest]Fixed
Source package: [conftest]
Details (1)
0.69.0-1.1· x86_64 · tumbleweedFixed · Fixed:
0.67.1-2.1nvd · conftest · opensuse · tumbleweed
- [tailscale]Fixed
Source package: [tailscale]
Details (1)
1.102.3-1.1· x86_64 · tumbleweedFixed · Fixed:
1.96.4-1.1nvd · tailscale · opensuse · tumbleweed
Observed:
References
- [https://ftp.suse.com/pub/projects/security/]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-33747]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-33747]
- [https://osv.dev/vulnerability/GHSA-4c29-8rgm-jvjj]
- [https://osv.dev/vulnerability/SUSE-SU-2026:2578-1]
- [https://osv.dev/vulnerability/USN-8230-1]
- [https://osv.dev/vulnerability/openSUSE-SU-2026:10456-1]
- [https://osv.dev/vulnerability/openSUSE-SU-2026:10472-1]
- [https://security-tracker.debian.org/tracker/CVE-2026-33747]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-33747.json]
- [https://ubuntu.com/security/notices/USN-8230-1]
- [https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-0873.json]
[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX] · [Ubuntu Security Notices (USN)]