A flaw was found in the buildah/copier Go package. When used outside of Buildah by a non-root caller, a crafted tar archive containing malicious symlinks can escape the target extraction directory and create files outside the intended destination. Buildah itself uses chroot hardening and is not affected.

Project Subscriptions

Vendors Products
Ansible Automation Platform Subscribe
Container Native Virtualization Subscribe
Enterprise Linux Subscribe
Hummingbird Subscribe
Openshift Subscribe
Openshift Devspaces Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.


Workaround

To mitigate this issue, users should ensure that `podman cp` operations are only performed against trusted Podman system service servers. Copying content from untrusted sources may expose the client to directory traversal vulnerabilities.

History

Tue, 15 Sep 2026 18:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 15 Sep 2026 16:45:00 +0000

Type Values Removed Values Added
Description A flaw was found in the buildah/copier Go package. When used outside of Buildah by a non-root caller, a crafted tar archive containing malicious symlinks can escape the target extraction directory and create files outside the intended destination. Buildah itself uses chroot hardening and is not affected.
Title Podman: buildah: buildah/copier: directory escape via crafted tar symlinks when used outside buildah by non-root callers
First Time appeared Redhat
Redhat ansible Automation Platform
Redhat container Native Virtualization
Redhat enterprise Linux
Redhat hummingbird
Redhat openshift
Redhat openshift Devspaces
Redhat quay
Weaknesses CWE-22
CPEs cpe:/a:redhat:ansible_automation_platform:2
cpe:/a:redhat:container_native_virtualization:4
cpe:/a:redhat:hummingbird:1
cpe:/a:redhat:openshift:4
cpe:/a:redhat:openshift_devspaces:3
cpe:/a:redhat:quay:3
cpe:/o:redhat:enterprise_linux:10
cpe:/o:redhat:enterprise_linux:8
cpe:/o:redhat:enterprise_linux:9
Vendors & Products Redhat
Redhat ansible Automation Platform
Redhat container Native Virtualization
Redhat enterprise Linux
Redhat hummingbird
Redhat openshift
Redhat openshift Devspaces
Redhat quay
References
Metrics cvssV3_1

{'score': 4.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:H/A:N'}


Projects

Sign in to view the affected projects.

cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2026-09-15T17:58:45.967Z

Reserved: 2026-08-25T12:47:21.722Z

Link: CVE-2026-79705

cve-icon Vulnrichment

Updated: 2026-09-15T17:28:13.717Z

cve-icon NVD

Status : Received

Published: 2026-09-15T17:17:27.313

Modified: 2026-09-15T18:19:21.677

Link: CVE-2026-79705

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses