CVE-2026-79705

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 v3 4.5 MEDIUM

4.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 0.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required HIGH

User Interaction REQUIRED

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://access.redhat.com/security/cve/CVE-2026-79705
https://bugzilla.redhat.com/show_bug.cgi?id=2523419

Configurations

No configuration.

History

No history.

Information

Published : 2026-09-15 17:17

Updated : 2026-09-15 18:19

NVD link : CVE-2026-79705

Mitre link : CVE-2026-79705

CVE.ORG link : CVE-2026-79705

JSON object : View

Products Affected

No product.

CWE

CWE-22

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

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"published": "2026-09-15T17:17:27.313", "references": [{"url": "https://access.redhat.com/security/cve/CVE-2026-79705", "source": "secalert@redhat.com"}, {"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2523419", "source": "secalert@redhat.com"}], "vulnStatus": "Received", "weaknesses": [{"type": "Secondary", "source": "secalert@redhat.com", "description": [{"lang": "en", "value": "CWE-22"}]}], "descriptions": [{"lang": "en", "value": "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."}], "lastModified": "2026-09-15T18:19:21.677", "sourceIdentifier": "secalert@redhat.com"}