CVEvulnerability
CVE-2026-13218
4.2 MEDIUM
Official page ↗
- Status
- Analyzed
- Published
- 2026-06-26
- Last modified
- 2026-10-25
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 4.2 MEDIUM — CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:L/A:L
- Weaknesses
- CWE-61
Description
A flaw was found in KubeVirt's virt-handler network cache handling. The WriteToCachedFile function writes data to a launcher-rooted path using os.WriteFile and os.Chown without symlink protection. A user with access to the virt-launcher container can plant a symlink at the cache file path, causing virt-handler to follow it and overwrite an arbitrary host file with JSON content and change its ownership.
Affected configurations
• kubevirt kubevirt
• redhat openshift virtualization (>= 4 <= 4.22.0)
Related
Weakness · CWE (1)
- CWE-61 UNIX Symbolic Link (Symlink) Following weakness
References
- https://access.redhat.com/security/cve/CVE-2026-13218 Vendor Advisory, Mitigation
- https://bugzilla.redhat.com/show_bug.cgi?id=2492654 Issue Tracking, Vendor Advisory