CVE-2026-79705
mediumA flaw was found in the buildah/copier Go package.
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
4.5
4.5 (CVSS v3.1)
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:H/A:N Severity source: NVD CVSS v3.1 (secalert@redhat.com)
Timeline (UTC)
Published: 2026-09-15 17:17
Modified: 2026-10-02 15:17
NVD status: Awaiting Analysis
Last synced 1 day ago
Verified against the source API 2026-10-27 06:53 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://access.redhat.com/errata/RHSA-2026:74861 secalert@redhat.com
- https://access.redhat.com/security/cve/CVE-2026-79705 secalert@redhat.com
- https://bugzilla.redhat.com/show_bug.cgi?id=2523419 secalert@redhat.com
Data sources
NVD CVE API 2.0 — fetched 2026-10-27 06:53 UTC · record ↗