Vulnerability Description
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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Lfprojects | Zarf | >= 0.23.0, < 0.74.2 |
Related Weaknesses (CWE)
References
- https://github.com/zarf-dev/zarf/pull/4793Issue TrackingPatch
- https://github.com/zarf-dev/zarf/security/advisories/GHSA-pj97-4p9w-gx3qPatchVendor Advisory
FAQ
What is CVE-2026-40090?
CVE-2026-40090 is a vulnerability with a CVSS score of 7.1 (HIGH). 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 documen...
How severe is CVE-2026-40090?
CVE-2026-40090 has been rated HIGH with a CVSS base score of 7.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-40090?
Check the references section above for vendor advisories and patch information. Affected products include: Lfprojects Zarf.