CVE-2026-79705

MEDIUMCVSS 4.5

Description

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.

Timeline

Published:September 15th, 2026 5:17 PM

Last modified:November 6th, 2026 1:17 AM

CVSS Scoring

CVSS v3: 4.5 (MEDIUM)

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:H/A:N

Weaknesses (CWE)

CWE-22

References & Reports

Advisories, patches, and third-party reports

https://access.redhat.com/errata/RHSA-2026:74861
https://access.redhat.com/security/cve/CVE-2026-79705
https://bugzilla.redhat.com/show_bug.cgi?id=2523419

Source: NIST NVD · Data may lag official sources by up to one minute