CVE-2026-79705
Podman: buildah: buildah/copier: directory escape via crafted tar symlinks when used outside buildah by non-root callers
No known exploitation. EPSS puts it in the 36th percentile. Fixed in 6.1.3-1.hum1.
No public exploit knownFix6.1.3-1.hum1Upgrade to this build
No ready-made check. Neither Nuclei nor OpenVAS has one for this CVE yet.
What to do
Find your product and version, then upgrade to the build on the right.
- Red Hat Hardened ImagesFixed builds6.1.3-1.hum1Stated by: CVE record
Versions as the sources state them. Full version matrix after sign-in
What it is
From the CVE record
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.
In plain language
No plain-language summary for this CVE yet.
Exploitation
Where each signal puts this CVE on the scale from published to confirmed exploited.
- CISA KEV
Not in the catalog. CISA has not confirmed exploitation.
- Public exploits
No public exploit or proof of concept found in the sources we track.
- EPSS
0.4% chance of exploitation activity in the next 30 days, which ranks it in the 36th percentile of scored CVEs.
Exploit Prediction Scoring System, FIRST.org. A probability, not a confirmation.
Lifecycle
13 events over 52 days, from the signal feeds we watch.
- Workaround availablerecord updated
- Workaround availablerecord updated
- Workaround availablerecord updated
- Workaround availablerecord updated
- Workaround availablepublished, weakness classified, att&ck mapped, record updated
Affected products
- Red Hat Hardened ImagesOperating Systems / linux-distro
- Red Hat Ansible Automation Platform 2DevTools & CI / ci-cd
- Red Hat Enterprise Linux 10Operating Systems / linux-distro
- Red Hat OpenShift Container Platform 4Cloud & SaaS / container-orchestration
- Red Hat OpenShift Container Platform 5Operating Systems / linux-distro
- Red Hat OpenShift Dev SpacesCloud & SaaS / container-orchestration
- Red Hat OpenShift Virtualization 4Cloud & SaaS / virtualization
- Red Hat Quay 3DevTools & CI / artifact-registry
And 2 more affected products. See all after sign-in
Technical detail
CVSS 3.1 vector
Open in the CVSS calculatorCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:H/A:N
Scored 4.5 by NVD.
How it is reached
- Attack Vector NetworkExploitable remotely over the network without any special conditions
- Attack Complexity LowNo special conditions — the attack can be reliably reproduced
- Privileges Required HighRequires admin or elevated privileges
- User Interaction RequiredA user must click a link, open a file, or perform some action
Scope
- Scope UnchangedImpact is limited to the vulnerable component itself
Impact if exploited
- Confidentiality NoneNo confidentiality impact
- Integrity HighTotal loss of integrity — attacker can modify any data in the component
- Availability NoneNo availability impact
Weaknesses
ATT&CK techniques
Mapped from the weaknesses above (CWE to ATT&CK), not observed in attacks.
Sources
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