CVE-2026-44517

Buildah: Build breakout using malicious Containerfile and Git Smart HTTP server or GitHub release tar archive

Published: Aug 21, 2026Updated: Aug 25, 2026 Sources: CVE List NVDCWE-22

6.3MEDIUM

Description

Buildah is a tool that facilitates building OCI images. From 1.38.1 until 1.43.2 and 1.44.0, TempDirForURL in define/types.go does not securely confine Git repository subdirectories to the downloaded build context, and downloadToDirectory and stdinToDirectory can follow a Dockerfile symlink left by a partially extracted tar archive. A malicious server supplying a Git repository or tar archive can cause files outside the build context directory to be included in the context or copied into the build. This issue is fixed in versions 1.43.2 and 1.44.0.

No summary for this CVE yet.

CVSS Vector Breakdown

Exploitability

AV:LAttack Vector

Local

AC:LAttack Complexity

Low

PR:NPrivileges Required

None

UI:RUser Interaction

Required

Scope

S:CScope

Changed

Impact

C:HConfidentiality

High

I:NIntegrity

None

A:NAvailability

None

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Weaknesses

CWE-22

Affected Products

containers

oss-projectaka crun, bubblewrap, aardvark-dns

buildahMixed

Cloud & SaaS

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques

Collection

Discovery

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References

https://github.com/podman-container-tools/buildah/commit/54459cf8a0feb4b1da766e4a6360451834e1846c

github.com

https://github.com/podman-container-tools/buildah/commit/fc2003bb2efeb3ed7d5c7e1e88d04e78f370a944

github.com

https://github.com/podman-container-tools/buildah/releases/tag/v1.43.2

github.com

and 2 more references View all →

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