Vulnerability · Published Sep 15, 2026 · Assigned by redhat
CVE-2026-79699Podman: buildah: skopeo: containers/storage: malicious tar whiteout header allows replacement of extraction destination directory
Medium 4.4
In plain English
A medium-severity security flaw 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 0.2% (higher than 7% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
A flaw was found in the containers/storage library. A crafted tar archive containing a malicious whiteout header (e.g. victim/.wh.) can cause the extraction destination directory to be replaced with an arbitrary file when processed by storage/pkg/archive.UnpackLayer, ApplyLayer, or ApplyUncompressedLayer.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.24 | podman | 5.8.8-r0 | ALPINE-CVE-2026-79699 |
| Debian:12 | golang-github-containers-storage | no fix listed | DEBIAN-CVE-2026-79699 |
| Debian:13 | golang-github-containers-storage | no fix listed | DEBIAN-CVE-2026-79699 |
| Debian:14 | golang-github-containers-storage | no fix listed | DEBIAN-CVE-2026-79699 |
| Ubuntu:24.04:LTS | golang-github-containers-storage | no fix listed | UBUNTU-CVE-2026-79699 |
| Ubuntu:26.04:LTS | golang-github-containers-storage | no fix listed | UBUNTU-CVE-2026-79699 |
| Ubuntu:26.10 | golang-github-containers-storage | no fix listed | UBUNTU-CVE-2026-79699 |
Affected products (as reported)
Weakness: CWE-59 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L
References
- https://access.redhat.com/security/cve/CVE-2026-79699 vdb-entry, x_refsource_REDHAT
- RHBZ#2523408 issue-tracking, x_refsource_REDHAT