GHSA-q3jc-42cq-33fjPublished

KubeVirt virt-handler network cache symlink vulnerability allows arbitrary host file overwrite

Exact source revision recorded 5 Nov 2026 23:38:32 UTC. It does not establish the source's current position. Latest evidence.

Recorded JSON

osv · GHSA-q3jc-42cq-33fj

Published

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.

Source published: 26 Jun 2026 00:32:07 UTC
Source modified: 5 Nov 2026 23:25:35 UTC
Observed here: 5 Nov 2026 23:38:32 UTC
Source terms: GitHub Advisory Database · CC-BY-4.0

Original source record · Cite this exact observation · Complete original publisher JSON

This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: osv · GitHub Advisory Database · CC-BY-4.0. Source text is retained; field grouping and change labels are provided by ChangeIntel.

CVSS_V3 · CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:L/A:L

Publisher rating · MODERATE