CVE-2026-79705Podman: buildah: buildah/copier: directory escape via crafted tar symlinks when used outside buildah by non-root callers
Updated under an hour ago ()
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It affects Red Hat Hardened Images and 6 other products. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 4.5 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:H/A:N
- Weakness (CWE)
- CWE-22
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- redhat
- NVD analysis
- Awaiting Analysis
- Record last updated
- Oct 2, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Red Hat Red Hat Hardened Images redhat:hummingbird | from 6.1.3-1.hum1 not affected | CNA record |
Red Hat Red Hat Ansible Automation Platform 2 redhat:ansible_automation_platform | 2 | CNA record |
Red Hat Red Hat Enterprise Linux 10 redhat:enterprise_linux | 10 | CNA record |
Red Hat Red Hat OpenShift Container Platform 4 redhat:openshift | 4 | CNA record |
Red Hat Red Hat OpenShift Dev Spaces redhat:openshift_devspaces | 3 | CNA record |
Red Hat Red Hat OpenShift Virtualization 4 redhat:container_native_virtualization | 4 | CNA record |
Red Hat Red Hat Quay 3 redhat:quay | 3 | CNA record |
References
- https://access.redhat.com/errata/RHSA-2026:74861vendor-advisory, x-refsource-redhat
- https://access.redhat.com/security/cve/CVE-2026-79705vdb-entry, x-refsource-redhat
- https://bugzilla.redhat.com/show_bug.cgi?id=2523419issue-tracking, x-refsource-redhat
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.