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 base score
4.5 (v3.1)
Severity
MEDIUM
Attack vector
Network
Weakness
CWE-22
Last modified
October 30, 2026
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:H/A:N

References

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