Dashboard / CVE-2026-13218

CVE-2026-13218

MEDIUM
MEDIUM Priority: 0.01 BB Relevance: 23/100
Published: 2026-06-26 Modified: 2026-10-25 First seen: 2026-10-29 Status: active

Attack Surface

No Interaction Scope Change

CVSS Vector Breakdown

AV: Local
AC: High
PR: Low
UI: None
S: Changed
C: None
I: Low
A: Low

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.

Weakness Classification (1)

Affected Software (2)

VendorProductVersion
kubevirt kubevirt -
redhat openshift_virtualization 4 – 4.22.0

References & Advisories (2)

Bug Bounty Relevance

23 / 100
✓ No user interaction

CVSS Score

4.2 / 10.0 v3.1
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:L/A:L

EPSS — Exploitation Probability

0.14%
Raw Score 0.001390
Percentile 3.2%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00139
2026-10-28
0.00139

Intelligence Sources

nvd ref →

External Links