CVE-2026-79705CWE-22path-traversal

CVE-2026-79705

Medium · published September 15, 2026

CVSS v3.1
4.5
EPSS
0%
Percentile
33.9
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
4.5 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:H/A:N
CVSS v4.0
Not supplied
EPSS
0.00408 · 33.9th percentile
Weakness
CWE-22 · Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Published
2026-09-15T21:17Z
References (3)
https://access.redhat.com/errata/RHSA-2026:74861 · [email protected]https://access.redhat.com/security/cve/CVE-2026-79705 · [email protected]https://bugzilla.redhat.com/show_bug.cgi?id=2523419 · [email protected]
EPSS history
Timeline
  • 17 SEP 03:32Z
    EPSS moved — → 0%
    epss
  • 15 SEP 16:23Z
    Podman: buildah: buildah/copier: directory escape via crafted tar symlinks when used outside buildah by non-root callers
    cvelistv5