Vulnerability-Lookup

OPENSUSE-SU-2026:20814-1

Vulnerability from csaf_opensuse - Published: 2026-05-26 12:21 - Updated: 2026-09-17 17:33

Summary

Security update for docker-stable

Severity

Important

Notes

Title of the patch: Security update for docker-stable

Description of the patch: This update for docker-stable fixes the following issues - CVE-2026-33747: github.com/moby/buildkit: malicious frontends can craft API messages that cause files to be written outside of the BuildKit state directory (bsc#1260967). - CVE-2026-33748: github.com/moby/buildkit: insufficient validation of Git URL fragment subdir components may allow access to files outside the checked-out Git repository (bsc#1261078).

Patchnames: openSUSE-Leap-16.0-804

CVE-2026-33747

8.4 (High)


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

Affected products

Recommended 12 products

Product	Version	Remediation
Unresolved product id: openSUSE Leap 16.0:docker-stable-0:24.0.9_ce-160000.5.1.aarch64	—	Vendor Fix
Unresolved product id: openSUSE Leap 16.0:docker-stable-0:24.0.9_ce-160000.5.1.ppc64le	—	Vendor Fix
Unresolved product id: openSUSE Leap 16.0:docker-stable-0:24.0.9_ce-160000.5.1.s390x	—	Vendor Fix
Unresolved product id: openSUSE Leap 16.0:docker-stable-0:24.0.9_ce-160000.5.1.x86_64	—	Vendor Fix
Unresolved product id: openSUSE Leap 16.0:docker-stable-bash-completion-0:24.0.9_ce-160000.5.1.noarch	—	Vendor Fix
Unresolved product id: openSUSE Leap 16.0:docker-stable-buildx-0:0.25.0-160000.5.1.aarch64	—	Vendor Fix
Unresolved product id: openSUSE Leap 16.0:docker-stable-buildx-0:0.25.0-160000.5.1.ppc64le	—	Vendor Fix
Unresolved product id: openSUSE Leap 16.0:docker-stable-buildx-0:0.25.0-160000.5.1.s390x	—	Vendor Fix
Unresolved product id: openSUSE Leap 16.0:docker-stable-buildx-0:0.25.0-160000.5.1.x86_64	—	Vendor Fix
Unresolved product id: openSUSE Leap 16.0:docker-stable-fish-completion-0:24.0.9_ce-160000.5.1.noarch	—	Vendor Fix
Unresolved product id: openSUSE Leap 16.0:docker-stable-rootless-extras-0:24.0.9_ce-160000.5.1.noarch	—	Vendor Fix
Unresolved product id: openSUSE Leap 16.0:docker-stable-zsh-completion-0:24.0.9_ce-160000.5.1.noarch	—	Vendor Fix

Threats

Impact important

CVE-2026-33748

7.5 (High)


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

Affected products

Recommended 12 products, the same list as for CVE-2026-33747

Threats

Impact important

References

10 references

URL	Category
https://www.suse.com/support/security/rating/	external
https://ftp.suse.com/pub/projects/security/csaf/o…	self
https://bugzilla.suse.com/1260967	self
https://bugzilla.suse.com/1261078	self
https://www.suse.com/security/cve/CVE-2026-33747/	self
https://www.suse.com/security/cve/CVE-2026-33748/	self
https://www.suse.com/security/cve/CVE-2026-33747	external
https://bugzilla.suse.com/1260954	external
https://www.suse.com/security/cve/CVE-2026-33748	external
https://bugzilla.suse.com/1261046	external

JSON

To clipboard

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CVE-2026-33747 (GCVE-0-2026-33747)

Vulnerability from cvelistv5 – Published: 2026-03-27 00:49 – Updated: 2026-03-27 19:59

Title

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

Summary

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.

Severity

8.4 (High)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-03-27 13:25 UTC

CWE

CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Assigner

GitHub_M mitre root

References

2 references

URL	Tags
https://github.com/moby/buildkit/security/advisor…	x_refsource_CONFIRM
https://github.com/moby/buildkit/releases/tag/v0.28.1	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
moby	buildkit	Affected: < 0.28.1

Show details on NVD website

JSON

To clipboard

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CVE-2026-33748 (GCVE-0-2026-33748)

Vulnerability from cvelistv5 – Published: 2026-03-27 14:00 – Updated: 2026-03-27 19:58

Title

BuildKit Git URL subdir component can cause access to restricted files

Summary

BuildKit is a toolkit for converting source code to build artifacts in an efficient, expressive and repeatable manner. Prior to version 0.28.1, insufficient validation of Git URL fragment subdir components may allow access to files outside the checked-out Git repository root. Possible access is limited to files on the same mounted filesystem. The issue has been fixed in version v0.28.1 The issue affects only builds that use Git URLs with a subpath component. As a workaround, avoid building Dockerfiles from untrusted sources or using the subdir component from an untrusted Git repository where the subdir component could point to a symlink.

Severity

8.2 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-03-27 18:55 UTC

CWE

CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CWE-59 - Improper Link Resolution Before File Access ('Link Following')

Assigner

GitHub_M mitre root

References

3 references

URL	Tags
https://github.com/moby/buildkit/security/advisor…	x_refsource_CONFIRM
https://docs.docker.com/build/concepts/context/#u…	x_refsource_MISC
https://github.com/moby/buildkit/releases/tag/v0.28.1	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
moby	buildkit	Affected: < 0.28.1

Show details on NVD website

JSON

To clipboard

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          "name": "https://github.com/moby/buildkit/security/advisories/GHSA-4vrq-3vrq-g6gg",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/moby/buildkit/security/advisories/GHSA-4vrq-3vrq-g6gg"
        },
        {
          "name": "https://docs.docker.com/build/concepts/context/#url-fragments",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://docs.docker.com/build/concepts/context/#url-fragments"
        },
        {
          "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"
        }
      ],
      "source": {
        "advisory": "GHSA-4vrq-3vrq-g6gg",
        "discovery": "UNKNOWN"
      },
      "title": "BuildKit Git URL subdir component can cause access to restricted files"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-33748",
    "datePublished": "2026-03-27T14:00:21.200Z",
    "dateReserved": "2026-03-23T18:30:14.124Z",
    "dateUpdated": "2026-03-27T19:58:28.764Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

OPENSUSE-SU-2026:20814-1

CVE-2026-33747 (GCVE-0-2026-33747)

CVE-2026-33748 (GCVE-0-2026-33748)

Tags

Sightings

Nomenclature

Related by attack behaviour