CVE-2026-79705
Podman: buildah: buildah/copier: directory escape via crafted tar symlinks when used outside buildah by non-root callers
- State
- Published
- Severity
- 4.5 Medium
- Published
- Sep 15, 2026
- Updated
- Nov 1, 2026
- Reserved
- Aug 25, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 4.5 Medium | CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:H/A:N | redhat |
Weaknesses
- CWE-22 Improper Limitation of a Pathname to a Restricted Directory
Affected Products
| Product | Versions |
|---|---|
Red Hat Hardened ImagesRed Hat |
|
Red Hat Ansible Automation Platform 2Red Hat | |
Red Hat Ansible Automation Platform 2Red Hat | |
Red Hat Ansible Automation Platform 2Red Hat | |
Red Hat Ansible Automation Platform 2Red Hat | |
Red Hat Ansible Automation Platform 2Red Hat | |
Red Hat Ansible Automation Platform 2Red Hat | |
Red Hat Ansible Automation Platform 2Red Hat | |
Red Hat Ansible Automation Platform 2Red Hat | |
Red Hat Enterprise Linux 10Red Hat | |
Red Hat Enterprise Linux 10Red Hat | |
Red Hat Enterprise Linux 10Red Hat | |
Red Hat Enterprise Linux 10Red Hat | |
Red Hat Enterprise Linux 10Red Hat | |
Red Hat Enterprise Linux 10Red Hat | |
Red Hat Enterprise Linux 8Red Hat | |
Red Hat Enterprise Linux 8Red Hat | |
Red Hat Enterprise Linux 8Red Hat | |
Red Hat Enterprise Linux 8Red Hat | |
Red Hat Enterprise Linux 9Red Hat | |
Red Hat Enterprise Linux 9Red Hat | |
Red Hat Enterprise Linux 9Red Hat | |
Red Hat Enterprise Linux 9Red Hat | |
Red Hat Enterprise Linux 9Red Hat | |
Red Hat Hardened ImagesRed Hat | |
Red Hat OpenShift Container Platform 4Red Hat | |
Red Hat OpenShift Container Platform 4Red Hat | |
Red Hat OpenShift Container Platform 4Red Hat | |
Red Hat OpenShift Container Platform 5Red Hat | |
Red Hat OpenShift Dev SpacesRed Hat | |
Red Hat OpenShift Dev SpacesRed Hat | |
Red Hat OpenShift Dev SpacesRed Hat | |
Red Hat OpenShift Virtualization 4Red Hat | |
Red Hat Quay 3Red Hat | |
Red Hat Quay 3Red Hat |
References
- RHSA-2026:74861vendor-advisory
- https://access.redhat.com/security/cve/CVE-2026-79705vdb-entry
- RHBZ#2523419issue-tracking
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