What’s Vulnerable › Vulnerabilities

CVE-2026-79699: Podman: buildah: skopeo: containers/storage: malicious tar whiteout header allows replacement of extraction destination directory

• Severity: medium (CVSS 4.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-15 · updated 2026-11-01
• Weakness: CWE-59

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 products

• Red Hat OpenShift Container Platform 4.18: all versions
• Red Hat Quay 3: all versions
• Red Hat Ansible Automation Platform 2: all versions
• Red Hat Enterprise Linux 10: all versions
• Red Hat Enterprise Linux 8: all versions
• Red Hat Enterprise Linux 9: all versions
• Red Hat OpenShift Dev Spaces: all versions
• Red Hat OpenShift Virtualization 4: all versions

References

• https://access.redhat.com/security/cve/CVE-2026-79699
• https://bugzilla.redhat.com/show_bug.cgi?id=2523408

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