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Vulnerability · Published Sep 15, 2026 · Assigned by redhat

CVE-2026-79705Podman: buildah: buildah/copier: directory escape via crafted tar symlinks when used outside buildah by non-root callers

Medium 4.5

In plain English

A medium-severity path traversal in Red Hat Ansible Automation Platform 2 from Red Hat. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 35% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)4.5Medium
Exploit odds (30 days)0.4%top 64.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Alpine:v3.24podman5.8.8-r0ALPINE-CVE-2026-79705
Debian:12golang-github-containers-buildahno fix listedDEBIAN-CVE-2026-79705
Debian:13golang-github-containers-buildahno fix listedDEBIAN-CVE-2026-79705
Debian:14golang-github-containers-buildahno fix listedDEBIAN-CVE-2026-79705
Ubuntu:22.04:LTSgolang-github-containers-buildahno fix listedUBUNTU-CVE-2026-79705
Ubuntu:26.10golang-github-containers-buildahno fix listedUBUNTU-CVE-2026-79705

Affected products (as reported)

VendorProductVersions
Red Hat Red Hat Hardened Images see references
Red Hat Red Hat Ansible Automation Platform 2 see references
Red Hat Red Hat Ansible Automation Platform 2 see references
Red Hat Red Hat Ansible Automation Platform 2 see references
Red Hat Red Hat Ansible Automation Platform 2 see references
Red Hat Red Hat Ansible Automation Platform 2 see references
Red Hat Red Hat Ansible Automation Platform 2 see references
Red Hat Red Hat Ansible Automation Platform 2 see references
Red Hat Red Hat Ansible Automation Platform 2 see references
Red Hat Red Hat Enterprise Linux 10 see references
Red Hat Red Hat Enterprise Linux 10 see references
Red Hat Red Hat Enterprise Linux 10 see references
Red Hat Red Hat Enterprise Linux 10 see references
Red Hat Red Hat Enterprise Linux 10 see references
Red Hat Red Hat Enterprise Linux 10 see references
Red Hat Red Hat Enterprise Linux 8 see references
Red Hat Red Hat Enterprise Linux 8 see references
Red Hat Red Hat Enterprise Linux 8 see references
Red Hat Red Hat Enterprise Linux 8 see references
Red Hat Red Hat Enterprise Linux 9 see references
Red Hat Red Hat Enterprise Linux 9 see references
Red Hat Red Hat Enterprise Linux 9 see references
Red Hat Red Hat Enterprise Linux 9 see references
Red Hat Red Hat Enterprise Linux 9 see references
Red Hat Red Hat Hardened Images see references
Red Hat Red Hat OpenShift Container Platform 4 see references
Red Hat Red Hat OpenShift Container Platform 4 see references
Red Hat Red Hat OpenShift Container Platform 4 see references
Red Hat Red Hat OpenShift Container Platform 5 see references
Red Hat Red Hat OpenShift Dev Spaces see references

Weakness: CWE-22 · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:H/A:N

References