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Kubevirt: kubevirt: symlink following in writetocachedfile allows host file overwrite from virt-launcher

Collected exploitation and prediction evidence

Risk source coverage

CISA KEV is observed exploitation evidence. FIRST EPSS is a dated prediction of exploitation in the next 30 days. Missing scores are unknown. This collector requests predictions only for explicit CVE aliases in the public NuGet archive; Microsoft release views retain their existing prediction scope.

No collected risk observation for these identifiers. This does not establish absence of exploitation or a zero probability.

Dated risk observations

Risk history is separate from CNA/OSV content history. Daily score drift is retained but only an upward crossing of 10% triggers the prediction change event.

Immutable source observations

7 recorded revisions

Each citation identifies one complete source statement. Source modification dates and the time this installation observed them are distinct. Latest history includes records historically associated by source identifiers; a removed alias is not a current equivalence claim. Exact citations show that source record's own earlier observations. Failed reads and unchanged polls do not rewrite history.

6 Nov 2026 19:05:43 UTC

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 con…

euvd · EUVD-2026-39594 · Published

5 Nov 2026 23:38:32 UTC

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

osv · GHSA-q3jc-42cq-33fj · Published

5 Nov 2026 23:38:32 UTC

KubeVirt virt-handler network cache symlink vulnerability allows arbitrary host file overwrite in kubevirt.io/kubevirt

osv · GO-2026-6914 · Published

4 Nov 2026 18:06:24 UTC

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 con…

euvd · EUVD-2026-39594 · Published

4 Nov 2026 18:05:55 UTC

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 con…

nvd · CVE-2026-13218 · Published

4 Nov 2026 18:05:41 UTC

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

osv · GHSA-q3jc-42cq-33fj · Published

23 Oct 2026 15:48:27 UTC

Kubevirt: kubevirt: symlink following in writetocachedfile allows host file overwrite from virt-launcher

cve-program · CVE-2026-13218 · Published

ChangeIntel

An IT change radar: releases, security, known issues, retirements, documentation changes, and service status from public sources. Every item links to supporting evidence; dates and statuses can change after they are read.

Sources read 7 Nov 20:55 UTC · 275 of 275 readable · 273 fully read · documentation 469/469 current