CVE-2026-40090CWE-22

Zarf has a Path Traversal via Malicious Package Metadata.Name — Arbitrary File Write

High · published April 14, 2026

CVSS v3.1
7.1
EPSS
0%
Percentile
31.5
In the wild
Unconfirmed
What it is

Zarf is an Airgap Native Packager Manager for Kubernetes. Versions 0.23.0 through 0.74.1 contain an arbitrary file write vulnerability in the zarf package inspect sbom and zarf package inspect documentation subcommands. These subcommands output file paths are constructed by joining a user-controlled output directory with the package's Metadata.Name field read directly from the untrusted package's zarf.yaml manifest. Although Metadata.Name is validated against a regex on package creation, an attacker can unarchive a package to modify the Metadata.Name field to contain path traversal sequences such as ../../etc/cron.d/malicious or absolute paths like /home/user/.ssh/authorized_keys, along with the corresponding files inside SBOMS.tar. This allows writing attacker-controlled content to arbitrary filesystem locations within the permissions of the user running the inspect command. This issue has been fixed in version 0.74.2.

The record
Technical detail
CVSS v3.1
7.1 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:L
CVSS v4.0
Not supplied
EPSS
0.00387 · 31.5th percentile
Weakness
CWE-22 · Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Published
2026-04-14T23:46Z
EPSS history
Timeline
  • 14 APR 23:46Z
    Zarf has a Path Traversal via Malicious Package Metadata.Name — Arbitrary File Write
    cvelistv5